Lb7 bad starter. I replaced the batteries and the truck ran for a day.
Lb7 bad starter. Jump to Latest Follow Mar 12, 2014 · 6.
2L Diesel Engine Suspension & Steering - 2001 - 2010 Top Contributors this Month View All Dec 11, 2021 · 1996 K3500 6. 5s in a 2500 HD 4x4 pickup for 350K, 2 sets of heads, lost count of the PMDs, 2 injection pumps, 1 set of injectors, 1 A/C compressor. :neener :gearjamin Jul 4, 2022 · Having trouble identifying the cause of a no start with low fuel rail pressure. The whole polarity thing adds a source of doubt. Jan 18, 2022 · Chevy / GMC Duramax 01-04. Is this a difficult job, I looked at it, looks hard to get at it. Any advice on where to go from here would be highly appreciated. Hbabler New member. I replaced the batteries and the truck ran for a day. AFE cold air intake, light tune Aug 19, 2018 · My other question, lb7 lly and lbz all have the same starter, but why does the lb7 crank at a slower rate than the newer ones, no my starter isn't going bad. If you do it this way, that will help in determine the problem. 4" downpipe into dual 7" mitre cut stacks, Airdog II 165, K&N Filter/Modded airbox & resonator delete, Profab 3" Intake Horn, EFI Live & DSP5, PPE Boost Valve, Suncoast GMAX-5, ML Converter, Boost/EGT Gauges, Kryptonite Tie Rods, 8" Fabtech, 20" Rev Dirty Harry wheels, 36x15. Don't think it a a run of bad castings, because it is spread over a number of years. Front hubs. Just to say it cranks slow, so it must be the starter- is not a good diagnose. It runs great,no smoke,no fuel in oil. EVERYTHING has continuity. The truck has blow by when there is diesel in the oil. 6 LB7. 325,000kms. Nov 30, 2022 · I would start by comparing your desired vs actual fuel pressure. Jul Dec 17, 2021 · If you’ve ruled out the batteries, the next thing to look for when your LB7 won’t crank over is the starter. Oct 30, 2014 · 2001 Chevy Silverado CCSB LB7 300,000mi and counting! New injectors @276k thanks to Lincoln Diesel! EFI Live w/ DSP5 by Duramaxtuner, AFE Stage 2 Intake, ProFab Turbo Horn, PPE BIV, ProFab 3" Downpipe, 5" Downpipe back MBRP Exhaust, FASS 150 Lift Pump, Rare Parts HD Gen2 tie-rods, Fleece IAH Delete, ATS Boost Fooler, Deviant transmission cooler lines, Boost and Pyro Gauges Outlawww Jan 11, 2014 · So my truck is a 2002 lb7. Jun 19, 2010 · its hard to diagnose something like this without having your hands on it personally but with all the info youve given and things tried im going to say that you have a either a bad cp3 pump or bad fuel regulator. If they are returning too much fuel and the system can't build pressure. And the starter solenoid shouldn't matter. Injector Operation LB7/LLY( prior to 2006) Sep 15, 2015 · 01 LB7 Balance Rates Have a LB7 that a friend just picked up and supposedly had #7 and #5 Injectors replaced. 04, Autometer Ultra-Lites, ARE Z-Series, DX-959, KL203, Mich XPS Tractions, Xferflow filler kit, Kennedy twin lift pump kit, Alpine CDE-HD137BT, JL Jul 12, 2019 · LB7: Bad cp3? Thread starter Samiam46; Start date Jul 12, 2019; Forums. Sold 07. 5" spacers all around, Ghost Fuel pressure gauge 0-60psi, EGT, Boost, DSP5 Key Switch, Moonshine EFI tunes, High Idle MoD, Nictane Adapter with 1r0750 filter Aug 18, 2011 · '08 2500HD CC SB 4X4 D/A, ATP EFILive with DSP5, AFE Test Pipe, Magnaflow DPF back 4" exhaust, 20" PYS or 18" PYR, XDP EGR block plate '02 2500HD CC SB 4X4 D/A, Kennedy headlight kit, OilGuard bypass, Amsoil air filt, Nicktane fuel filt, Pred 1. Knowing the signs of a bad starter can help you diagnose the problem and get back on the road as quickly as possible. Edge CTS Insight. sutherby02 Discussion starter 76 posts Jul 25, 2010 · 2003 LB7 CCSB 4x4. Alternator, Starter, P/S pump, Hyd Brake Booster and hoses replaced. 8,260 lbs empty. Dash stepper motors. e. 3 Powerstroke 210k miles And four more cars and one boat! Feb 15, 2015 · SOLD 2001 GMC Sierra 2500HD, CC,SB EFI Live V2 w/dsp5 MAX EFFORT by Idaho Rob, EGT's Never higher than 1150* :thumb Cognito Braces, and ATP Sleeves, BD Manifold, ARP H. travels down the road at Nov 24, 2018 · One thing the ’01-’04 LB7 Duramax is notorious for is injector failure. Feb 6, 2009 · I have a 03 LB7, 128,000 mi, and put into service 10/02, so it is currently still under the injector warranty. If one were bad and the rest were good it would just run rough. " '01 GMC Sierra SLE 2500HD LB7 Crew Cab/Long bed, 2wd, 2" factory Lift, Rancho Shocks, LDS 45% SAC Injectors, PPE Downpipe & Boost Valve, Aftermarket Turbo Horn, 4" MBRP Exhaust, EFI/live, Glowshift Gauges, Leveled, Chrome Bettys, Fuzzy Dice, Quadraphonic 8-Track Stereo w/surround, Hula Girl Jun 23, 2015 · The codes you are getting are codes for an electrical issue. GMC '04 2500HD SLE CC D/A LB7 SB Summit White, LineX, Nicktane, JK headlight harness, JK fuel pump and harness, Banks exhaust, EFI Live, intake horn mod, Suncoast 6 speed conversion. I put it on a scan tool this a. Built motor, and still slow. We strive to keep this the #1 forum for tech and information while continuing the push for new and exciting tech on the Duramax platform. 1995 K2500 SUBURBAN, LB7 DURAMAX/ALISON powered May 11, 2013 · Sometimes it's caused by a worn seal or a plugged rad cap not venting. 5V not turning key This is a good test with a bad result if you actually did what you think you did. Apr 23, 2010 · Hey guys, I am new here but have read through your forums ALOT to get answers on previous problems with my truck. If you do not have extensive automotive experience, it can be challenging how to tell if your starter is bad. Sep 28, 2009 · -Work with LB7 High idle mod-Preferrably turbo cool down compatible-Detailed info on installing yourself I'd like to install it myself, if at all possible, unless you guys strongly recommend against it. That just leaves the Starter Relay and the Starter Solenoids (PULL-IN & HOLD-IN). It Jun 4, 2007 · 2001 Chevy 2500HD D/A Industrial Injection Silver Bullet, ARP Studs & C gaskets 4" MBRP turbo back exhaust, SCIV 1056, Kennedy Billet pickup, Kennedy dual lift pumps, SPA combo gauge, Air lift bags, Crank it up Tierod sleeves, Cognito Steering Braces, 285-70-17 Nittos on polished Dodge wheels, Mag-Hytec Diff cover, Dec 15, 2013 · 2003 LB7 CCSB Old School Hypertech programmer K&N cold air 4" exhaust w 6"tip Borla XR-1 Firestone bags w/in cab controller American Outlaw Buckshot w/285/75/16 Big bad Boss 9. You can OHM out the Starter Relay, and test it by removing it and testing with jumpers and a small light bulb for a load. Aug 10, 2010 · LB7: LB7 Shaking/vibration issue Thread starter jonathancasey19; Start date Aug 10, 2010; It's so bad you can hear your voice shutter, radar detector can't stay Feb 2, 2014 · 2004 2500HD LT 4x4 LB7, Allison, 190,000 miles Ported intake horn, 4" MBRP with straight through muffler, Aimsoil since first oil change, 2 new Extreme X2 batteries, Nicktane adapter with the 3 micron Donaldson secondary fuel filter, Racor 500 marine primary fuel filter, 80watt l. My question is do i replace it with a modded lb7 cp3 or a modded lbz cp3 with lbz fpr and who sells a good one, I have efi live (still figuring it out though) and May 19, 2022 · Damaged starter parts ; Oil leaks ; Bad fuses or relays ; Bad connections at the starter (dirt or corrosion) High temperature in the engine bay ; Freezing temperatures in the engine bay; These are a handful of the problems that can cause a decline in starter function. All balance rates were taken at idle in neutral with Efi Live Scan Tool May 12, 2011 · 2004 Silverado LB7 D/A CC LB DRW 4x4, Firestone Ride-Rites, Air Lift Compressor, Line-X Bed Liner, Retrax Bed Cover, Backup Cam, Pullrite Super 5th Hitch, Rear View Cam AstroStart 2205A Remote Start (from Max Power) Nov 30, 2011 · LB7 with bad injector(s)? TheBigSteamer Discussion starter 7 posts 03 lb7 Stock like a rock. I know this has been discussed many times, but I can't find my specific issue. I was wondering if this was a normal Oct 30, 2014 · 2001 C3500 with 265,000 mi. removing the starter and using a 5/8 deepwell half inch drive sockett and jam the flywheel carefully. May 16, 2011 · 2003 Chevy 2500HD Crew Cab 6 ft bed Duramax 6. Next start the threads on the top bolt. Mar 1, 2016 · About us. Jan 22, 2012 · I will try a shop in Murmansk Russia that a friend of mine mentioned, (I live right next to the border) I think the entire problem is a bad solenoid, (Might also be the wiring from the solenoid to the starter itself, as the wire was partly melted) the brushes in the starter looked fine. Free Shipping & Financing. Water pump. 0L Powerstroke engines. Diesel logic has a bad reputation for shit injectors. Rebuilt engine ~12,000 miles ago. When using the scan tool to increase rail pressure at idle, if you can’t get to 21,000 PSI then the injectors are usually bad. Jun 5, 2009 · I have a 2003 LB7 with 75000mi. Sort by Oldest first Oldest first Newest first Most reactions. So I check starter and the soleniod has been hot and discolored the positive post. Apr 25, 2018 · Replaced the CP3 and all the lines and 0 issues. The truck has 144k, has about 3. They told me I would have to pay for labor. Apr 3, 2018 · 1) Possible bad injector, use the scan tool to cancel one cylinder at a time and see if the smoke clears up. When I replaced my CP3 and FPR, I got a bad FPR that caused idle lope. Did turbo intake mod when it was off cause i had time to burn while thinking of which way to go next. When it starts{sometimes it does not} it takes 5 or 6 seconds to start hot or cold. Steering intermediate shaft. Once you determine which one is different than the rest, (If any) then you can take the valve cover off and test the actual injectors to see if they show the same results, or if the injector is truly bad. -R Apr 28, 2011 · hey guys, im new to the duramax side of things, and im lookin at an 01 lb7 with new injectors 40k ago, with 226k on it. If there isn't any power on the red wire it may be broken (see below), the ECM may be bad (unlikely) or connector C107 may be bad (likely). 2002 Silverado 2500HD with LB7. Like I stated before, Ive had a few hard start LB7's. delayed starting isues. Many starters are replaced that are not bad. Quadrasteer 4-wheel steering. If it still doesn't turn over, it's absolutely the starter. I don't have any way of doing a balance check but the evidence is there. I know the surging might be a bad fuel pressure regualtor but would like to line out the other issues before digging into that. t. What caused you to start using starting fluid in the first place? Just trying to sus out the original problem. d. Know 2 personally. Sold it 02 2500HD basically stock, 450k miles now. i did end up having to cut an old line off to get it out of the truck so i could undo the fitting in the ground. Any insight, advice, suggestions or direction to look is GREATLY appreciated. Like. If you have 12v at the battery each battery, and 10v at the starter your battery cables are bad. I ran one of our 6. Sep 8, 2020 · Hello everyone. 12. Mar 1, 2014 · I think I have a bad starter solenoid. and now have a no start condition. I still haven't had time to look in the book yet, but the codes you are getting are for incorrect current detected on an injector circuit, if i'm not badly mistaken. Diamond Eye 4" Turbo back Intake: Air Box Mod. I tried to fire it back up but it just spins over and doesnt start. Feb 12, 2010 · A jobber shop saw the ground off teeth on the ring gear, when they where going to replace the starter. Sep 14, 2011 · Yeah. com was founded in 2006 and created a site which houses some of the best known Duramax tech you can find. 01-04. I inspected the connections at the harness and all seemed well. Jan 26, 2019 · I checked the balance rates right before I shut it off hoping a cracked piston would show a high balance rate in any cylinder but all were within -2/+2. Your CP3 pumps at full pressure all the time. i than disconnected the fpr connector which should give max pressure correct? i verified i have fuel on the supply side running my airdog also noted the return on the cp3 is flowing a lot of fuel. Studs, M. I thought one of my 5 year old red top optima battery had a bad cell. So I suppose if they are bad it could cause a no-start. So my guess there is a bad wire somewhere? Prior to scanning it I dismantled the fuse box and checked for corrosion and bad fuses but all seemed good. 77@ 124mph at 7700# fuel only-e. Aug 9, 2017 · Most people when they suspect a bad FICM for no start usually have this code. One sign of injectors going out is hard starts. P. The dealer was trying to screw me saying I had a bad seal on my water pump. So either a bad ignition switch or bad wire somewhere. Jump to Latest Follow Mar 12, 2014 · 6. Dec 31, 2012 · Wellthe starter had worn the copper down to nothing where the brushes ran, the batteries were dead 525cca car units, and the fuel filter was on crooked. 03 lb7 stock like a rock. as far as the pop goes, crazy but ive personally seen a duramax snap the input shaft to the pump and gear was litterally just spinning in the housing, but we had that motor way beyond Apr 28, 2010 · The injectors all looked good, there were not any other codes, and the regulator command current (mA) and duty cycle (%) seemed right on what normal values should beI am really surprised/confused a new pressure regulator did not fix it, all of the other LB7's that ive worked on that had these symptoms was for a bad regulator. Jun 5, 2013 · About us. Bad switch still? Tried ANOTHER NSBU switch, same issues. The only issue that i did come across was that I am now not getting voltage to the pin 118 or ignition voltage circuit with the ignition on. Fuel Injector Failure; Water Pump Failure Feb 10, 2007 · #1 · Feb 10, 2007. LB7 Duramax head gasket problems can occur for a couple of reasons. Sep 3, 2010 · 2001 Chevy CC/SB 4WD EFI Live DSP 5, LBZ Short Block, Cut LB7 Pistons,keyed crank and cam, balanced,LBZ Intake Runners with RDL Shorty Y-Bridge, EPR Twins, Big Dipper 40% overs, MBRP Cool Duals, LBZ CP3, ADII, BD Manifold, C2 Gauges, H2 Wheels, Cognito Sleeves and Braces, Hids-Hi-Low-Fogs. - That would indicate either a bad injector, or a bad wire going to the injector. I do the fuel filter religiously every oil change because of these pesky injectors. 11 gears. Apr 30, 2016 · LB7: Bad FICM? Shorted to power? Thread starter Hbabler; Start date Apr 30, 2016; Forums. 4" rancho lift on 35" Toyo M/Ts. about 20 sec. Sep 2, 2008 · 01-04 Duramax LB7 Tech Articles - LB7 Water Pump Replacement DIY - LLY similar Parts: Water pump Minimum tool requirements: Good socket set with atleast 30 inches of 3/8 extensions for starter bolts swivel extensions and u joint extensions. It has white smoke at idle that smells horrible that gets worse when warm. 6 Technical. I replaced the FPR, which wasn't as bad as a lot of guys made it seem. If it turns over but doesn't blow any fuel out it still could be the starter. Nov 25, 2013 · LB7 Dually 3500 CCLB with Lincoln Diesel Injectors, Ready Lift leveling keys, ProFabTurbo Horn, Bilstein 5100 Front Shocks, BD Performance Manifold, Banks 4" Exhaust, Banks Big Head Waste Gate, PPE boost valve, 235/75/16 stock wheels 1. If not, try to get a 1/2" extension into one of the holes in the flywheel. removed pressure line from cp3 and turned truck over and nothing comes out just the How to replace the starter in a 2004 Chevrolet Silverado 2500HD LB7 6. I had an earlier post about my 2001 LB7 not starting when it was below 0 degrees. No leaksno problemsuntil two days ago. Tried the new NSBU switch. 1982 Chevy C10 Silverado 6. its in MINT shape. Despite this, head gasket failure usually doesn’t occur until over 100,000 miles, so it’s not nearly as common as it is in 6. Truck idles rough and has white smoke at idle. No fuel leaks. Will eventually start. Feb 11, 2021 · Does the truck have a ton of blowby? Is the CCV breathing properly and not plugged? I had a customer who did a CCV reroute (obviously not on an LB7) but he decided to simply run the two lines together and not vent them to the atmosphere which caused the truck to white smoke pretty bad, nothing seemed to be permanently damaged tho (turbo wasn't puking oil nor was anything else). I need some help with this if anyone has had this issue before Feb 18, 2021 · Said the BCM isn't receiving signal to crank from the ignition switch. Any help on things to check would be much appreciated, Thanks! Jun 22, 2020 · I was talking about loctiting the cups. Jul 26, 2013 · I have a 02 lb7 with 215,000 miles on it and has developed a bad idle lope. If your getting pressure build up long after the engine cools off (hard coolant hoses) then the cause could be over pressure due to a bad gasket or cup. I began to have starting issues with it. Backstory, I'd replaced it years ago with the updated "tan" version over the oem. When it is warmed Up, if I shut it down and crank it back immediatly, it will fire right Up like brand new. There should be nothing between the battery positive and the starter positive except a length of heavy copper wire. I told them no since they replaced my pump a couple of months prior to that. Leveled with Zone Offroad C32N 3" Lift System With Black Nitro Shocks. Truck is a 2003 lb7, max effort efi live, boost increase valve but otherwise completely stock. 1 starter motor, 1 alternator, all the engine idler pulleys at least once, 1 expansion tank, something like 3 or 4 blower motor switches and a control board for the A/C heat in the dash. Jul 5, 2015 · There were no opens in any circuit. Oct 16, 2011 · Battery cables can be bad. From what I've read, maf reading at idle should read approximately 38 and around 400 at wot. Feb 12, 2011 · Chevrolet '16 2500HD 4WD LTZ CC D/A LML Deep Ocean Blue, HID lighting, otherwise stock. Scanner shows P0700 and P1571 codes. Apr 16, 2012 · I replaced fpr cause i had fishbite pretty bad if i didn't at 2 stroke oil every fill before and thought it might cure my no start problem. 5 LLY CCSB - Levelled, PCV reroute, LBZ intake, Superchips Flashpaq, 285/70R18 It was a bad, broken remote starter box that is Jul 16, 2021 · 2001 2500hd 4wd extended cab ls, s&b cai, 4" stainless steel exhaust, efi live from atp trucks, edge cts, ppe boost valve, banks intercooler pipe, air dog ii 165, rebuilt tranny with suncoast kit, transgo shiftkit and billit torque converter, new upgraded tailshaft, pump rub fix on transfer with new aluminum tail shaft, new tow mirrors, new gage heavy duty front and rear bumpers, beans sump Dec 29, 2023 · dcgtls Discussion starter Hopefully, it will not be too bad but that motor has a lot of miles on it. The two primary failure points of the factory injectors are internal cracking of the injector body itself and corrosion-induced failure of the internal ball seat. LM455 Flasher Module. balance Oct 25, 2013 · LB7 Dually 3500 CCLB with Lincoln Diesel Injectors, Ready Lift leveling keys, ProFabTurbo Horn, Bilstein 5100 Front Shocks, BD Performance Manifold, Banks 4" Exhaust, Banks Big Head Waste Gate, PPE boost valve, 235/75/16 stock wheels 1. Cat to go next. its not a bad job, i replaced all the lines, pump and gear box in a few hours, make sure you use flare wrenches on the fittings though, you really really do not want to round them off. Direct Fit Replacement Upgrades. Jump to Latest Follow Duramax Starter. Mar 7, 2009 · LB7 . With some of these issues, a simple fix can restore a starter. Truck was running fine except for an occasional cylinder 1 misfire code and a slightly rough idle when warm. 2500HeavyDuty Book 'em, Danno! Apr 10, 2013 · 2003 chevy 2500 lb7 213xxx miles 4x4 bully dog power pup, ppe boost valve, intake elbow w/cai, mbrp down pipe, boost-pyro-fuel guages. Sounds more like a battery issue, or battery cable issue, or both. Duramax Hard Parts. So I believe I'm having a maf problem but I'm not 100% sure why or if I am at all. Injectors were done 100k ago. Ended up keeping the old starter and selling the truck. If there's solid instructions, or if someone knows a good write up about these things, I'd really appreciate it. H. IMHO, this can only help your situation. and only had 99rpm while I was cranking it. 2002 GMC Sierra 2500 HD 4x4 Duramax Diesel 6. Apr 9, 2015 · Chevy / GMC Duramax 01-04. Make sure the batteries are charged, and in good condition. Occasionally we will see an instance where both are needed to be replaced. its a really nice truck but how reliable are the LB7s? and how long will the allison last me on Jan 10, 2012 · LB7: Diagnosing bad FPR? Thread starter Bustedknuckles; Start date Jan 10, 2012; Forums. So I replace with a new Napa starter two weeks ago. So got injectors changed and return lines changed. 5 Sierra 2500HD SLE 6. Ever since this past summer it has been progressively harder to start after I drive the truck, then cut it off, and try to start it back up between 10min to 3 hours later. So did the reduction gears and the contractors on the stator. It was at about 191k and they were all hard driven miles, mostly bad fuel and bad maintenance, obviously speeding up the process of the CP3 going out. 3 Nov 13, 2014 · 11. It's just another lb7 quirk, but why does it do these things, duramax is a duramax hard parts wise, heads, block, valve springs, crank and cam shaft, what makes the lb7 crank at a slower Sep 12, 2022 · "If I don't see you in the future, I'll catch you in the pasture. The best way to confirm if the starter is getting what it needs, is to measure for voltage at two different places: the starter solenoid signal wire and the main battery cable. We’re going to cover each of these problems in depth and discuss overall LB7 reliability. Jan 7, 2012 · 2011 GMC SLT 2500HD DMAX CC/SB Midnight Blue Metallic/Black ReadyLift torsion keys & 2" blocks, 305/60/18 BFG KM2, s/s mudflaps, 4" wide oval cab length s/s stepbars, spray in boxliner, GM rubber bedmat, front windows tinted to match back, smoked window vent visors, sunroof, fully loaded minus Nav. As I shut the door and walk away, the engine died. 5 sets of injectors, valves adjusted, 3rd altinator, 2nd injector pump, 2nd injector modual, 3rd PRNDLL switch, new harmonic ballancer pin, and other work on the moter and trany to keep it going. Make sure the extension is seated well, as its got to hold the engine still so you can get the balancer off. 2003 Chevy Suburban 2500 LB7 Duramax AWD Quadrasteer 135k miles. EFI Live by Idaho Rob, 660K+ and rolling, Undercover Bed Cover, Vortex spray in bed liner, Odyssey Extreme Batteries, Westin steps, Bilstein Shocks, Road Master Active Suspension, M/A Pump Rub Kit, PPE Trans Cooler, PPE 3" downpipe, MBRP 5" Exhaust, Edge Insight CTS, K&N drop in filter, AirDog II 100 w/ CAT 751, LLY FF Housing, Running on LMM Get the Best LB7 Duramax Upgraded Starters & Alternators for the best charging and starting available. The FRP, attached to the CP3, is a solenoid device that regulates the CP3 pressure based on commands from the ECM, The ECM gets information from several sources but mainly the fuel rail pressure sensor All of these must work in concert. I doubt only one bad injector would cause it. Symptoms of a Sep 8, 2008 · Try disconnecting the turbo oil supply line from the turbo and grasp the end firmly between your lips with the hole aiming into your mouth so as to create a perfect positive seal. No issues for another month and then it does it again, but it does it every day. Feb 4, 2017 · 2002 GMC Sierra K2500HD Extended Cab Short Bed 4x4 6. New injectors by dealer at 254,000. The diesel mechanic was in the service manager's office & said that if that seal was truly bad, I would be getting coolant in the oil. CrankitupDiesel Tie Rod Sleeves. 5 LB7 Forums. mod, MA Aluminum Bleeder, PPE Boost Valve, Banks Ram Air- Intercooler, FASS 150, LBZ FPR, Shimmed FPRV, 4" MBRP turbo back exhaust w/6"tip, Corsa Muffler Apr 6, 2015 · Dave 2003 GMC Sierra 2500HD 4 door, short bed, LB7 Color - Pewter, Leather interior, console Factory exhaust with muffler deleted. Jan 30, 2019 · I have replaced the maf sensor and also the coolant temp sensor with new oem parts, Also replaced the ecm with no change in symptoms at all. Feb 15, 2013 · Okay, last summer my water pump went bad and started to leak. 5" Flo-Pro Crossover, AirDog II DF165 w/ tank sock,delete,TD-Max boost controller,OPS extension hose,Glow Plug Harness,Glowshift Maxtow gauges,Boost & Fuel Pressure Bolts,2/0 Battery Cable Upgrade,PMD Re-Location Kit, in bumper, Optilube fuel additives Mar 4, 2013 · 2003 LB7 ECSB - Stock - Sold 2004. Broken fan clutches or bad water pumps cause overheating issues. Wiper motor. EGR Valve. Fpr is new as well as filter housing. so had a friend check injestors and cp3 pressure. Jun 23, 2022 · i got a 2003 LB7 that needed injectors it was filling up my oil with diesel. Turbo inlet horn. Truck wouldn't start day after bodyman welded cabcorners on and don't know if he disconnected batteries. Cognito pitman/idler braces. Jun 10, 2013 · I have an 04 LB7 with tell tale signs of bad injectors. its got EFI live i believe, and its a really nice truck its got an 05 bed and an 03 front clip. Duramax 6. Feb 7, 2010 · If you have the pump already as you stated, I would install it. Maybe doing an upper injection clean would help clean and lube it make it operate right. Un hooked the batteries for hours and still no connection to the ECM. When the fan clutch is damaged, it can’t function properly, giving the LB7 Duramax engine the extra cooling it needs. MBRP 3" Downpipe. Ive heard of alot of guys getting 8 bad injectors from them right out the box. Put everything back together and truck only cranks for like maybe 4 seconds and it stop cranking even with me having key in crank position. Easiest way is an air hammer tool but you can do it yourself. balanced rates check out good Nd rail pressure is great. Sep 21, 2007 · LB7 Fuel leaks/Injector problems Tools you'll need (besides normal metric stuff) *5mm allen bit *10mm allen bit *5mm 1/4 ball-end bit (not nessiary but very handy) *pick set (handy too) *5mm allen wrench When enough parts are removed blow-off or vac the valvecover area (top) and around inj lines to remove debris. Truck had been starting easily, running fine, no issues. the nicest ive seen in an lb7 that isnt rediculously priced. 5L Diesel Engine Duramax First Generation: 2001-2004 (LB7) Duramax Second Generation: 2004. talked to a couple people and they say the LB7 ECM has issues with a certain portion of the circuit board that goes bad. I have little knowledge of reading balance rates on the duramax platform and wanted to know what you guys thought. I have had the fuel filter housing rebuilt,a FASS fuel pump system installed,fuel pressure regulator and a glow plug module. 50x20 Dick Cepeks Jun 18, 2015 · 2002 2500HD Duramax 6-Speed manual transmission :neener 120,000 miles-ish No mods Jan 28, 2008 · 3) If you have that J-44643 tool, install it in place of the starter, using the starter bolts. Jun 16, 2010 · 2003 GMC Sierra 2500HD LB7 Duramax 4WD Crew Cab SB 310k miles. Jan 26, 2014 · 2002 LB7 - Just changed all 8 glow plugs and now engine won't start. I have removed all accessories like the stereo amps and there are no codes. 10,12,14 mm Apr 25, 2020 · Bought a 2003 LB7 bone stock last october. Truck hauls like a freight train. So, I bought a new one at NAPA and installed it. S. Oct 12, 2009 · Smoke!!! Smoke!!!! Are you Smoking yet? 2007. Diesel logic is also big kahuna diesel. Jul 19, 2016 · 2004 2500HD LT 4x4 LB7, Allison, 190,000 miles Ported intake horn, 4" MBRP with straight through muffler, Aimsoil since first oil change, 2 new Extreme X2 batteries, Nicktane adapter with the 3 micron Donaldson secondary fuel filter, Racor 500 marine primary fuel filter, 80watt l. Mar 22, 2013 · Pull all 8 glow plugs and try to turn it over with the starter. 5 LB7 Duramax Powertrain Duramax Starter. Rear Diff Pinion seal. My truck knocks really bad when i start it lost oil pressure on the highway and it overheated then died. 6L Duramax Extended Cab Long Box Z71 Fass 150/95, Rare Parts G2 hd tie rods, EFi Live, DSP5 a tune from Duramaxtuner. cp3 is not pumping fuel monitored via efilive. Checked the oil and it's overfull (probably full of diesel). The chart indicates a bad connector at the FICM or a bad FICM all together. But I'm being told that the 03 VIN 3 LB7 was revised and is seldom replaced. Duramaxdiesels. Jul 4, 2023 · Starting fluid is very bad for these trucks. Found out my cp3 is leaking from the plugs in the back. needs help Aug 5, 2011 · I have an '04 LB7 with a pretty serious current draw. Dec 7, 2012 · Justin 2001 LB7 Silverado 2500HD LT CCSB 4x4. I’m aware my LB7 needs injectors or injector return lines 100% due to the Excessive amount of diesel that gets into the Crankcase. Started by putting in a new switch, which didn't help. Bad wiring, a bad injector(the electrical part of the injector), or a bad FICM are the most likely causes. Feb 23, 2015 · Since just the 40A IGN A fuse blew, it almost has to be a problem in the Starter Solenoid Circuit. Transfer case rebuild w/MA Pump Rub upgrade w/syn 10w-30. Then fish the new starter up the same way the old one came out and just set it up in there so it doesn't move. Sep 7, 2012 · We tried for hours to get it to connect with the ECM again to no avail. Truck is a 03 LB7 with 260k on it. 6L Duramax Diesel. Sep 27, 2016 · From positive bat terminal to positive starter post 12. Sep 5, 2017 · 2001 2500hd 4wd extended cab ls, s&b cai, 4" stainless steel exhaust, efi live from atp trucks, edge cts, ppe boost valve, banks intercooler pipe, air dog ii 165, rebuilt tranny with suncoast kit, transgo shiftkit and billit torque converter, new upgraded tailshaft, pump rub fix on transfer with new aluminum tail shaft, new tow mirrors, new gage heavy duty front and rear bumpers, beans sump Feb 14, 2012 · 2004 Chevy 2500HD EC/SB w/LB7 ZF-6 speed :gearjamin 295/75-R16 Toyo A/T II DiabloSport Predator on 55HP tune Exhaust: BD manifold. Dec 2, 2010 · Glow Plugs. Has anyone heard of the stock injectors mechanically. com, MBRP 4" Downpipe back, Edge CTS Insight, Cognito Idler/Pitman Arm Braces, PPE Deep Transmission pan, deep pan filter, Transgo Jr kit Sep 9, 2014 · Use-ta Haves-->>2006-6. Fuel filter head rebuilt/upgrade MA WIF plug. Duramax Tuning, Logging, and Gauges Mar 7, 2014 · 03 lb7 ccsb 4x4- HD hood and grille- inch lower than stock 20" mkw's 305/50/20 cooper zeons Now all glowshift gauges- traction bars- DHD stainless DP-4" MBRP- PPE BIV- AD II 200 lift pump- edge insight CTS- spectre CAI- 45% over injectors- LMM cp3 & FPR -EFI live dsp5 from tony burkhard and danville performance Feb 7, 2010 · 06 LBZ CCSB Banks Cold air, Banks Cat Back, EGR Delete with "mild" tune. 5" MBRP turbo back. Dec 4, 2016 · Most trucks we see in the shop with the grinding issue turns out to be most commonly the Starter, sometimes Flywheel Ring Gear Assembly if it's had starter issues for a while. Normal operating pressure when it gets up to temp can cause this if the seal is bad or the cap is plugged. Tried upper end injector cleaner and replaced fuel filter with no luck. Jun 12, 2012 · To use the starter to break the balancer bolt loose is very dangerous. Jun 12, 2010 · Its especially bad on hills, I can get her going up to highway speed (75 or so) on flat ground if i'm gentle on the pedal and slowly work up to speed at around 2100rpm or so, however on decently steep hills she get very unhappy and down shifts to what I'm guessing is second or third and the rpm shoots to over 3000 and the truck slows to 55mph. Assuming that you live somewhere where it's not cold right now, it should start after a long crank even without glow plugs. Seems like there is a dead spot in the solenoid,I already got stranded once, but its been starting the past 3 days with no problem. goin bad as far as the springs and seats. 3rd transfer case, 2nd frontend. at first I suspected the fpr so I replaced it and that made it worse so I thought that the new for could be faulty so put on another new one and idles jest the same. They arent remans they are refurbished injectors. 2L Diesel RWD Single Cab LB 115k miles. horrible advice. Same problems. Again it is leaking out at the bottom of the water pump. 04 3500 Silverado CC Dually 4x4 Banks Six Gun Sep 3, 2010 · The LB7 we just bought with 2 bad injectors and otherwise 100% bone stock got 14 mpg around town. Oct 14, 2012 · 01 Chevy 2500HD ccsb 4x4, black, 241k+ 4" Magnaflow exhaust, Dick Cepek Extreme Country 285-75-16, Raceline Raptor 16x8's MA450 trans; WCFab intake & horn; Stealth 64 turbo w/ WCFab down pipe; driver's side manifold and up pipes; MA T-Case Upgrade Jun 15, 2009 · It seems GM Bosch had big problems with the Injector Driver Units and even recalled thousands of earlier units for similar issues. 2003 2500HD LB7,Fass Titanium. Theres a big difference. And still not affecting the balance Mar 9, 2010 · To do this remove the starter by using a 15mm to remove the two mounting bolts and then just lay it out of the way then using a 15mm you can remove the bolts either with a small ratchet or a lot of extensions and a swivel on an impact. daytime driving, fog, and reverse lights :neener Feb 19, 2013 · 4-Test starter draw, while cranking. has 175,000 miles. 5 LMM RCLB DSP5 by Idaho Rob, 4inch Straight pipe, Edge Insight CS. LB7 . However I would suggest double checking everything first. Code:U18000 Description:Lost Communications FICM voltages are LB7-96v, LLY-48v, LBZ-24v. Samiam46 New member Apr 4, 2013 · 01 LB7 ECSB DSP5 MA Trans. should have someone help you. Nov 25, 2016 · I know it could be valve adjustment, faulty injector, maybe a bad valve? I'm not sure but it's something to do with the cylinder balance off 2004 GMC 2500HD LB7. SO I did a little test: Grabbed some spare wire and jumped from the Bat(+) to the starter relay under the hood, with the key off the truck CRANKED OVER. It runs REALLY good now. 5" spacers all around, Ghost Fuel pressure gauge 0-60psi, EGT, Boost, DSP5 Key Switch, Moonshine EFI tunes, High Idle MoD, Nictane Adapter with 1r0750 filter Jan 10, 2018 · However, excessive leakage from the injectors can also cause a DTC P0087, P0093 or a P1093 to set. However, using the scan tool to kill the injector does not reduce rail pressure in the injector and the tip can still leak fuel, cap off lines one at a time (cap is tool # EN-47589) to pinpoint injector. I had the P0087, P0093, P1172 codes. Oct 27, 2019 · It will be the first one in from the right end of the bottom row. 6L AFE intake, Banks turbo back Exhaust, Leveling Kit, 45 Gallon fuel take, LT285/75R16 Aug 27, 2017 · 1996 K3500 6. It destroys sensors. Often, if a car won’t start, this can indicate that the starter motor might have gone bad. cp3 pressure was right on the money and the injectors all looked good except for two of them with was 4. Dec 25, 2015 · I have a LB7 that will only run up to 8psi on turbo Truck run pretty good no really bad smoke pressure test inner cooler system all held 20psi closed off waste gate checked air filter and installed new filter made no change in psi stock truck 50000 miles edge insight and edge Juice. Aug 5, 2020 · With that being said, the LB7 is known to suffer from fuel injector failure, bad water pumps, fuel filter housing leaks, blown head gaskets, and engine overheating. I checked all the normal stuff---glowplugs, intake heater, fuel pressure, etc. Oct 22, 2014 · Followed the circuit from the starter solenoid to the starter relay, through the fuse box to the ECM. If a bunch of fuel blows out of any of the glow plug holes, it was hydro locked. This is a basic how to video describing the replacement of the start Nov 5, 2020 · The LB7 Duramax is more prone to head gasket failures than future generations of the Duramax engine. I have a 2003 Duramax. Nov 8, 2015 · ^^^ oh i like that cooler, thats a much better design then the one i bought. K&N Cold Air Intake. 2500HeavyDuty Book 'em, Danno! Feb 14, 2008 2,209 0 0 starter relay could be bad, the black small wire is the signal wire . ProFab intake horn Suspension: Cognito UCAs with 2" Lift Front and Rear. and the balancer bolt is a 36 mm I think or 1 7/16 socket. Custom Straight pipe Autometer Cobalts 20" 027's Air Dog II 165 EFI Live by Idaho Rob. the ONLY way to tell is to do a return rate test, and that test is not done with a scanner. I would do this before you proceed any further and pay anyone to do diagnostics. 5-2005 (LLY) 6. Truck was running fine, then when i took it in to get a brake line done in randomly started loping very bad. Aug 13, 2013 · Doubt the starter is dead, and pumping these trucks won't do anything. There should be no Nov 18, 2010 · '01 2500HD LB7, 4"Rancho lift 18" Pro Comp rims with 35" Toyo MT, 4" straight pipe into 5" round tip stacks, K+N Intake, Quadzilla Stealth 2 on 90 HP, Nicktane Cat fuel filter adapter, Uniden PC68XL CB, Whelen Four strobe light bar rollin on 285s on stock rims for the winter Husker Diesel - 402-502-6961 Nov 21, 2020 · I just see something going wrong while you fixed the heads but O-rings do go bad and lines do get cracked and suck when disturbed. Ratcheting flex head wrenches make life easier in tight areas. Out of those vehicles, the troubles were glow plug controllers, injectors and 2 had bad fuel primers. Sep 29, 2012 · Went to start my 04 LB7 this morning to let it warm up before going to work. it started right back up but oil pressure idling was very low!! ive changed the oil and it brought the pressure up barely any, still knocks. 2 V plow '70 Chevelle ss 502 "the other toy ":gearjamin Feb 13, 2011 · Just see if you can find one that is different than the rest. Apr 30, 2016 · installed new lbz cp3 on my lb7. Save Share. m. - Checked fuses - all good under hood and in cab - Primed & reprimed fuel filter - was due for new fuel filter anyway - so changed - Checked wire looms around FICM - no fraying / chaffing apparent Apr 29, 2014 · Then it won't start again, starter clicks a few times when cycling the key and it finally starts. Feb 6, 2015 · Duramax First Generation: 2001-2004 (LB7) SiXSiXMAFIA Discussion starter some of my intake clamps were lose one time and I had low power and bad mpg just Sep 9, 2008 · LB7 Engine life I hear you guys. 6-speed Allison conversion. Aug 4, 2012 · Kennedy Diesel-owner More than just a salesman-I use and test the products that I sell on a daily basis! Superflow Lie Detector in house 2002 Chev K2500HD D/A CC Long LT 11. Also a bad ground can cause your issues, make sure the battery grounds are good, the alt ground is good. You can also use balance rates to help determine if you have any bad injectors. with the key in the RUN position, the truck would not crank. 0 3500 WT DRW ExCab Flatbed, 2005-LLY 3500 LS DRW Crew Cab, 2002-LB7 3500 LS DRW Crew Cab I Live my life in such a way that when my feet hit the floor in the morningSatan shudders & says "Oh shit, he's awake!" Mar 9, 2024 · Question for the Duramax experts. 17x9 fuel boost wheels. I was driving last week and while stopped at a stop light the enigine began idling really rough then the "low oil pressure" warning came on, then immediately i got the "reduced engine power" warning. Good Oct 17, 2021 · Okay sorry if I'm not posting in the correct spot. . 5" Flo-Pro Crossover, AirDog II DF165 w/ tank sock,delete,TD-Max boost controller,OPS extension hose,Glow Plug Harness,Glowshift Maxtow gauges,Boost & Fuel Pressure Bolts,2/0 Battery Cable Upgrade,PMD Re-Location Kit, in bumper, Optilube fuel additives Oct 17, 2017 · Bought a new NSBU switch as problems seemed to lead to it going bad. You could test for 12 volts by probing the red wire at the cam sensor connector before removing the connector at the ECM. Sep 23, 2018 · Short of the tiny bit of air showing up, I would guess the FPR is sticking ever so slightly. It takes. Has now 80k miles. (not driving it) but when you change the oil and it’s not diluted it has 0 blow by. Long crank times when cold (4-5 seconds). After pulling my hair out and doing research/diagnostics i thought it must be a bad FPR. My LLY is a dually that weighs in somewhere around 9k due to add-ons got a best of 20 mpg unloaded on the highway, but it has a lot of mods and usually gets 18 mpg. Oct 17, 2011 · Hey fellas got an 03 lb7 having some. I think your digging to far, but I could be wrong. 5k on new injectors installed by dealer, fuel filter was replaced Oct 14, 2012 · Bad injectors could cause this. Of it rolling over then it fires up. I bought a new one at NAPA and installed it 3 weeks ago. The solenoid style Bosch units found in the LB7 employed a non-hardened internal ball seat to seal the Nov 6, 2010 · Firefighter02 Discussion starter Wondering if anybody is having or has had fan clutch issues on their LB7 . So i guess im looking at a . if your gonna be in Engine overheating is another common problem with the LB7 Duramax. Jan 15, 2011 · Not too bad for a daily driver lb7. daytime driving, fog, and reverse lights :neener Dec 17, 2011 · Ok guys, yesterday i turned on my truck (lb7) and found out that diesel was gushing out from the rear middle of the engine. Make sure the power and solenoid cables for the starter are not trapped behind the starter before you put the starter bolts back in! Carefully pull them forward and move them out of the way. I have also had to replace the passenger side bank of injectors in the last 10k miles. Cranks but won't start. No leaksno problemsuntil last month when it started to leak. plmotorworx Discussion starter Replaced bad turbo with new spoologic, running very rough, not sure where to go next Sep 1, 2014 · An injector can return to much fuel and cause the same symptoms as a bad CP3. This could take as long as fifteen minutes for the oil in the exhaust system to burn off. Can I just replace the solenoid or do I have to replace the starter/solenoid together. 5L,( "F" Eng #141 cast block) NV4500, crewcab, dually,Diamond Eye 4" Turbo Back Exhaust w/2. Truck has ~276,000 miles and a Kennedy lift pump. Built 700R4 automatic, 4. 6 Duramax LB7 286k miles 2001 Ford F-250 Crew Cab Short Bed 4x4 7. Have your wife, girlfriend or male domestic partner start the vehicle and observe if the blue smoke goes away. Duramax LB7 Engine Problems.
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