Duramax cranks a lot before starting. Sounds a lot like the old Cummins VP44 issue.

Duramax cranks a lot before starting I meant this went on for almost 10 seconds. Truck only turns over a few times and fires right up when cold but after you drive it about 50 miles and it warms up it cranks for a super long time before it starts if it even does. primed the fuel filter and it started and ran for 5-10 seconds, did this three times with the same results. Starting to question the FPRV. They will move now when it is halfway through a crank sequence but will not before attempting to start it. 7so far Big thanks to SDP -07ccsb LBZ 4x4 totaled 9Dec13 lowered with built trans sitting in After 5 times of this it would not start anymore and is now at a No start condition. 6. Hopefully, you can catch a problem in the minor early stages Before you start just chucking parts at it you could really benefit from a proper diagnosis. Cranking is cranking, starting is starting. Same codes. 0 1500 Duramax start issue. It may take 5-6 cranks to get the system charged enough to start. Seems like I’m not getting enough fuel. Myself and a buddy are starting to build a motor him and lbz and myself an lb7. So i changed the fuel pressure sensor and pigtail, as well as the drivers side rail with regulator. 5 LB7 Duramax Powertrain everything was fine for a few weeks until I went to start it and it would crank and cranks kinda fast but would not start it kinda sounded like it was trying to fire on one cylinder maybe? Disclaimer is that there are probably a lot of stupid questions coming from me Own a 2002 5. Factory cranks are nitride heat treated weaker steel. Pulled out from a stop light onto the highway and the truck shut off, cranks no start. 6L duramax I used starting fluid to crank it and the motor ran at max rpm before I could turn it off. 3 v. Ron Nielson - Most of the information I provide relates directly to my 2008 LMM - Your truck may be a little (or a lot) different 2008 Silverado LT, Crew Cab, 2WD,LB however when I begin cranking, the number turns read and climbs from 0 and up every cam revolution it seems . 2003 2500HD 6. Duramax with 58,000 miles -- all stock. cant fully try it because i have a cracked tranny. I have an 06 chevy duramax 2500. Then after fueling up and purchasing a case of beer I started the truck up as usual it ran for 2 seconds and shut off. I looked at some forums and some said it could be the fuel pressure regulator. i took it back to the diesel shop for the guy to figure out why. Then push My 2020 L5P with push button start will not crank. The injectors and FPR were all replaced at 100k. Ron Nielson - Most of the information I provide relates directly to my 2008 LMM - Your truck may be a little (or a lot) different 2008 Silverado LT, Crew Cab, 2WD,LB. Put charger on battery for several hours, cranks again, but won't start. During the limp mode repairs my mechanic noticed it didn't start a few times, but once limp mode fixed I drove the truck for 4-5 days and about 600 miles with no issues till 2003 Duramax recently started having this issue after a water crossing. Tightened screw, cranks but won't start. Before you go to start the truck in the morning, try and push the prime button. It sounds like it wants to start but doesnt. Pulled off to the side and grabbed my five gallon can, fueled it up and let my air dog run for almost fifteen minutes before trying to start it again. I swapped the glow plugs then went to start it and it would crank but not start. 2004. I went out to start it and it will not start. Still no crank. 5 2500hd duramax LLY with PPE tuner - SOLD TO DAD 1971 Nova SS with 406ci and TH350w/ shift kit. Wanted $900 to put in fuse block in engine compartment and then they could run further tests. no DIC errors. Prime and bleed over and over doesnt seem to help. I was getting a P0380 code but I think that has been there a while. May be down on power but not too terrible. He cranked and I saw fuel squirt from the number 5 pressure line on the rail. Think of it this way. 5 LB7 Duramax Powertrain Lb7 Crank, No start. Sometimes when i shut it of it will fire right back up. MBRP down pipe, 4 in. I have done a couple things to try and diagnose the issue but cant seem to figure it out and 2003 Chevy Duramax cranks over but will not start. 6 duramax (LB7) all Brand new batteries today. Went to start it. Come join the discussion about modifications I didn't start my truck for a few days and experienced an excessively long crank. Save Share Jump box on the RH battery, and hooked up the truck to the LH battery to jump it, eventually the cluster stopped reading Voltage, it finally fired up a few minutes later, drove to work and now it won’t start, cranks fires and immediately dies within a second, finally after a few hours got it to run and made it home, but once again same Background - 2016 LML 6. It should be firm, or perhaps 1 or 1-1/2 strokes until firm. 6 LLY, I got the truck a day ago and it ran and drove great when i met up with the guy and took it on a test drive and i had no problems starting it that day at all that day (although it probably didnt sit long enough to get too cold). Started all of a sudden one day. I cleared the codes and now with the no-start I’m only getting the U18A2. 000 km or 150 000 miles on it from new and well looked after not winter driven at all if i can help any thoughts as to what my problem is thanks mike Just got done building the lb7 in my truck. i cant see any leaks on the fuel lines and the top of fuel tank looks I have been reading past threads on here about similar issues, but to keep it short, truck was running fine, no signs of any issues, stop at a customers house and do a job, i go to leave and truck cranks but no start, i tried to prime the fuel pump multiple times but to no avail, just wondering if anyone has a more updated diagnosis on what barely touch the key and it starts instantly (usually was 2-4 seconds. I have a 01 lb7 dmax cranks over plenty fast but won't start. 2015 GMC Duramax SLT Iridium Metallic Weather Techs, Access Cover, 275/65/20 Duratracsmore to come:neener Then he started asking say. Checked prime button, still pumping. Once it's going, NO CODES. It is acting like I have a bad battery, or one is going out. The issue is that I am starting a lot harder the past week or so. Add ether for 1 second to air filter, and truck will start. 9 with the engine off. Turns out it was just a priming issue with the Fass. The truck cranks a long time before it starts but when running, runs great. Push primer several times until hard and it starts. Before i left for vacation i got in to start it to move the truck so it wont be in the way and it would not start. about 10-20 cracks before it started) runs smoother now the power is awesome. 5. 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, 2011 duramax started having issues cranks over but wont start. Have a 2011, went to turn it on and it only started for around 3 seconds and turned off. It will eventually start if it isn't plugged in, which 90% of the time if I know it's gonna be super cold I plug it in and it starts Chevy / GMC Duramax 11-16 LML Forums. Cranks only a second or 2 before going poof. It almost seems like the starting process is electronic rather than mechanical and it waiting for something. Most of the time it just cranks. Code that was throwing before taking into shop was low rail pressure but they Next day change fuel filter message and no start. 11-16 LML Duramax Powertrain. Now it won’t start at all. My 17' averages about 3-4 turns before starting. :confused013: anyone else have a problem Let it sit for 2 hours go to start it and fires up but the cranks are long i would say 5-8 cranks before it actually fires up. 5 (LBZ & LLY) Top Contributors this Month 🇨🇱 🚆2007 LBZ 3500 LT3 DRW Crew Cab, Sulastics, Putnam XDR 15K, B&W 30K-Turnover GN+Companion, Ride-Rite AirEFI'd by Rob 🇺🇲🚛 2008 LMM 3500WT DRW Crew Cab, 8 'Flat/GN, Workforce Alum Toolbox, Ride-Rite I have a 2002 lb7 duramax. What's thks edge thing (insight) Seems to start within a couple 3 to 5 second cranks for a few min before dying after sitting outside every night. 0L - Old Trucks: 1 - LB7, 3 - LLY, 1 - LBZ, 2 - LMM, 1 - Went to start on Wednesday, all crank and no start. So I thought maybe I lost prime or something so I primed it checked for leaks and tried again. Plenty of fuel, about 5 days of using since filled. I I have a 2010 Ford Escape XLT with 95,000 miles on itabout 5 months or so ago one day it just starting to long crank before starting. To note, it cranks at a normal rate, batteries tested out great too and they're from 2021. The truck starts strong, runs for 2 seconds then dies. I also changed that and still 6. I was getting a bit worried so I push the start button again to stop the cranking. On my LB7 there was instance feedback when turning the key. Takes a lot of cranking on cold starts. They're a lot less expensive and easier to replace than the crank sensor, as well as being free to test. Same problem. 3 Silverado LT. So i scanned it and pulled these codes p1125 P2122 P2128 P2133 Got truck home replaced the fuel pump control module. Would that indicate a crank or cam sensor? Most of the information I provide relates directly to my 2008 LMM - Your truck may be a little (or a lot) different A forum community dedicated to Chevy and GMC . And also if you release the key from "start" before the engine actually fires, the ECM will keep cranking the engine automatically until it fires Not like it was before it would start instantaneous before i played with it. Ron Nielson - Most of the information I provide relates directly to my 2008 LMM Lift pump runs before engaging key all the way to start. . Come to find out codes for the app were do to low voltage from killing the batteries 6. When I go to start it all the power goes out but then it doesn’t crank. My 2008 Chev Duramax will crank but not start. Story/Issue = Went to crank my truck in the morning before work, as I always do. Tightened it up to 30 ft lbs and had him crank again. seems like a fuel pump issue but dont want to start throwing parts at it. I had a buddy come help me pull it back to my house and I did a lot of research on the forums but can not come up with someone having the exact same problem. Like i say it can sit all night or few mins. Question. I have to prime the heck out of it and it starts. I figured it was a fuel issue, so i changed the primer pump and fuel filter and still nothing. It has 260. Took to dealer. Charge and check the batteries it starts faster the quicker the engine turns. It tries to start faster now. Will crank but not start. Now before i begin im just going to let it be known i used the search bar before posting this and the results are inconclusive. My 2007. I’ve got the 2 code, P2635 and U18A2. I have a tough time starting the truck on the first try when turning the ignition. makes sure you got fresh diesel 8 months is a long time. I I have been up and down, left, right, and sideways in these engines. Truck had been on limp mode but eventually sorted it out with a TCM replacement, but also replaced ignition switch,NSBU switch and harness. I have checked for the chafed wiring etc and have not found any. 2L Diesel Engine Duramax Third Generation: 2006-2007. Once firm, try and start the truck. I killed the batteries trying to start it. Better than the 5 seconds of cranking 2004 lly Chevy Duramax crank no start. Hey guys. went to start and all crank no start. 4-5 or more, it needs replacement. Come join the discussion about modifications, towing Chevy / GMC Duramax 01-04. If i do short 2 second crank on the second try fires right up. A short trip. Know I have little over 13 gal of fuel in tank. LMM Duramax Crank, No start. Long Time Cranking II New information Truck would not start this morning. It's been a good 2 months since the problem started. Truck has new crank position sensor, fuel pressure regulator , rail pressure sensor and all rubber fuel lines under hood. Check fuses/relays. SOLD and KICKING MYSELF! 2003 Chevy 2500HD Duramax ZF6 CCSB K&N Cold Air, Diamond eye 4" duals 5" tips, Exergy 12mm Stroker pump, 45% over injectors from LDS, BD SuperMax, LML Driverside Manifold, South Bend Dual Disk Clutch, Fass Titanium 150, Custom EFI Live Went in the pizza place for 5 minutes and came back out. Save Share Reply Quote Like. 5 LB7 Forums. Drove it for about a week just fine. Duramax cranks but will not start. Built engine, s366/s480 🇨🇱 🚆2007 LBZ 3500 LT3 DRW Crew Cab, Sulastics, Putnam XDR 15K, B&W 30K-Turnover GN+Companion, Ride-Rite AirEFI'd by Rob 🇺🇲🚛 2008 LMM 3500WT DRW Crew Cab, 8 'Flat/GN, Workforce Alum Toolbox, Ride-Rite Air 2021 3. If truck sits for as little as 2 min it cranks way to much to start. When its cold, sometimes averages 5-6, but not always. To find out why your car is cranking too long before starting, we’ll have to take a tour through some of the more common causes, and what you might need to do to fix them. They said no power to ecm. Was pricy at $750 but well worth the results lol . When I start the truck it seems there is a delay from when I turn the key to the start position to when the engine actually starts turning over. It just cranks and cranks. What are you thinking My 2001 LB7 with 202k miles has suddenly started cranking for about 5-6 seconds before starting. Though many would tout security in the alternate firing order And anything else you guys suggest I should do before trying to fire it? -12cclb GMC 475 over stock, sportsman cp3, 60% injectors, built trans best of 12. 2011 LML Silverado 2500HD LTZ 2001 GMC Sierra 2500HD Duramax ZF6 ECSB K&N Cold Air, 4" MagnaFlow 5"tip. (which is about the only diesel mechanic around) the street, parking lot, and shop were packed with Fords. Studs, M. Lift pump turns on and sounds funny now and my fuel guage works again. Edit #2- oh, and go with an aftermarket forged crankshaft like Callie crankshaft. When you start cranking Chevy / GMC Duramax 01-04. Both batteries tested at 11. Also, let me put on my tin foil hat and start conspiratisinggm cast blocks have a cure time process after Every once and awhile it cranks but won’t start. No RPM fluctuation or stuttering before shutoff indicating that I was out of fuel. For those few seconds, it feels/sounds great. But when you go to try and start it it cranks for 1 to 2 seconds and then stops cranking even if you hold the key. Hi Car People - A few months ago, I had a starting issue that I resolved after replacing the battery, starter motor, starter relay and switch plunger cylinder. I pulled the codes It seems to build a lot of boost on small hills when on the highway and my egts are climbing higher than I used to see. Just looking for some ideas. 0 Duramax, they sell even before they hit dealer lots Duramax 6600; LB7 cranks for a couple seconds then stops; Relays can fail and act just like you describe. Save Share Have the crank no start issue. It was 209 before I turned the engine over and only went up to 950 or so with the engine rolling over. Its building like 6k psi of fuel pressure no smoke or fuel smell at all from exhaust. Check for codes. MBRP straight pipe dumped. It does have a code for stabilitrak but it has always been there. Now it will crank for days and never start. Truck would not crank or start. Tags put it in and just cranks, It does run when starting fluid is sprayed into it but nothing after and won’t stay running, seeming like ficm or injectors are not responding but the ficm says it’s commanding the injectors. There are no engine codes either. it can take a lot of pumping to get it started. Only like 1100 or so on a long hill but it used to not get that high unless I was getting on it. If your truck was running and the only thing you did was to replace the fuel filter head(?), the filter, and the water sensor, I would charge those batteries fully and crank for 10-15 seconds at a time, allowing some time between crank episodes for the starter to cool. Now going back and forth and him doing research has me wondering about using stock cranks. It started ran for a minute then died again. Attachments. Ron Nielson - Most of the information I provide relates directly to my 2008 LMM - Your truck may be a little (or a lot) different 2008 Silverado LT, Crew Cab, 2WD,LB A forum community dedicated to Chevy and GMC Duramax I went home jumped into her car and it cranked over fine, it wouldn't start but it cranked. “Low Voltage to Fuel Injection Control Module” it will not clear. Running great until last week. It started, as I'm walking away, I hear it shut off Go I'm almost certain it's fuel related it takes a lot of pumping to get it started once it hasn't been started for a while. If and when the truck sits for too long I have the same problem. 5 LTZ that has 730k kms (453k miles) has had a start and dies issue for months now. Sounds a lot like the old Cummins VP44 issue. 8 volts when off and aux battery is 12. I changed the fuel filter on it. Here's what I've done so far: Research on this site lol; Added 5 gal of diesel to tank (even Last Saturday when I was leaving work, I cranked my truck like normal, put it in gear and was driving out of the parking lot but before I made it very far the DIC starting dinging and said "low oil pressure" and the truck shut off. In the past week or so it still takes the same amount of cranks, but it is very slow to turn those same number of cranks and of course sounds very low. they break alot of cranks. Before you say Fuel filter housing i just bought a new one instead of rebuilding so i could rule out the issue completely. 5-2005 (LLY) 6. and was surprised the knock is gone. I'm not sure if the fuel level being low could have played a part or not. Check for prime loss. I replaced both of the relays in the glow Just replaced the battery (problem existed before that), and only today noticed that if I don't give it maybe a couple seconds in key on position, it takes a little longer on the 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. (or a lot) different 2008 Silverado LT, Crew Cab, 2WD,LB. This time no smoke. 5L Diesel Engine Duramax First Generation: 2001-2004 (LB7) Duramax Second Generation: 2004. The relay that gave the injection pump power had a faulty socket in the fuse block and would Truck only starts after heavy cranking, runs about 5 to 8 seconds then dies. Got new batteries. Depends on what you mean by long cranking. Batteries were weak. After a few minutes it wouldn't crank either. Any ideas. I put the PPE tuner on to check the rail pressure while cranking. Chevy / GMC Duramax 11-16 LML Forums. Most of the info I can find suggests a Fuel Pump Control Module, and unfortunately they’re in limited supply. Ran my truck many times Saturday and late in the day parked, came back an hour later, cranks fine, no start. Pulled fuel filter off to check o rings etc. Never had this happen before, so I waited a minutecranked the If your car engine cranks longer than five seconds before it starts, there’s like a fault in the fuel system or ignition system, and you need to be careful. So being stranded I sprayed some wd40 in the air filter and it started up and will run all day. Tried loosening the vent screw on top of fuel filter, had to pump about 25 times to see fuel. Sealing properly before, until you changed the filter and disturbed the seals in pushing the primer button to prime. Had been around 8 days since I had started the truck Your truck may be a little (or a lot) different 2008 Silverado LT, Crew Cab, 2WD,LB. Cranks but wont start. 5 (LBZ & LLY) Top Contributors this Month I finally get it to start and it was good for about 2 days. I bought a fuse block and will put in myself. I have replace fuel pump and rebuilt the head with no better result. Things were perfect until my son got in the car yesterday and turned 6 hours later went to jump in the truck to go to the store, I used the key fob to unlock the truck. (air dog 2 165) no more priming and turns on way easier then before. Now back to the task at hand. But once shes fired up no issues. Starts about 8,000psi and soon jumps to 11,000-12,000 psi before it dies. Cranks and starts at temp of 25 degrees or above, but after running to engine temp of 150 degrees +. If I immediately try and start it it will not. I have put a lot of highway miles on it 97,000 so even if the battery doesn't fix the issue I'll need a new one sooner or laterthanks for sharing what your's was doing i would assume so because there is a new post it seems like every day on the 3. 4. 6 Duramax Diesel Engine that make it susceptible to the crankshaft failure. Even now when I I have a 01 lb7 dmax cranks over plenty fast but won't start. first owner/only owner. The truck cranks at 160RPM and fuel pressure won't get over 600PSI. 5 LLY, 2X, shell, XDR, MikeL Heavy duty up-grade, 6spd, TransGo, deep pan, de-badged, 65 Gallon replacement Aero tank, LBZ-mp, Kennedy pump, shimmed, Pre-fuel filter, tow mirrors, BU cam, gauges, GPS, Sirius, bags, custom grille Duramax Fourth Generation: 2007. P. Here is a 13 page thread covering mainly new gas, but lm2s in there also regarding the no start issue. Ron Nielson - Most of the information I provide relates directly to my 2008 LMM - Your truck may be Its an 04. Up until Charles Kettering from Dayton Ohio invented the electric starter for the automobile we had to put a hand crank into the front of the engine and crank it over to start it. Starts right up then dies in 5-10 seconds. Come join the discussion about modifications, towing, classifieds Now for the issues. (meaning when I turn the key and let go it will some times crank longer than it new it has to crank 3 or 4 times as long before it starts probably related. It used to crank 3 or 4 times fast and then start. 5 sierra 2500HD duramax 6. Still has the low rail pressure code and map codes. No smoke, no surge, truck I need help. maybe a fitting is getting air in it or something. This trucks got a lot of electronics. By dscluchfc in forum Duramax 6600 Replies: 2 Last Post: Cranks but won't start. 3l powerstroke on original injectors lmao. 3. Won't start ? 2019 3500HD, Cclb, Drw, Deleted and Tuned, Wehrli turbo horn, intake, boost tubes, Banks idash, VSE fuel filtration, 5 inch Driving through my neighborhood, a few hundred feet from the house, the truck just shut off. A little less than ideal, but suspect this is due to all the fuel washing oil away from cylinders. After it sat outside for the night it would crank but just wouldnt start! There are some things about the 6. By chatting and providing personal info, you understand and 2002 chevy 2500 6. It just cranks for a couple seconds then drops cranking. If I crank once, stop, and then crank again the truck starts fine. Checked for water, seem to be pure fuel out the bottom. Then push the start button the 3rd time and it fired right away. Replaced the filter head and filter primed the system like crazy still no start. Jump to Latest 11K views 8 "The NOx Sensor is on the way out when you drive it out of the lot" Starting battery is at 12. 2010 Escape long cranks before starting. Almost sounds like it is I didn't start my truck for a few days and experienced an excessively long crank. Anything around 10°F, the thing starts like a 500k mile 7. Was able to jump starter, but still no crank. It never took that long before. What is desired rail pressure vs actual while cranking? What is actual rail pressure You can have the batteries tested, but my truck was starting with weak batteries and a slow crank with no problem. Save Share Reply A forum community dedicated to Chevy and GMC Duramax diesel My opinion is not the opinion of Duramax Forum, Vertical Scope, or other Duramax Forum staff members! Non Vendor contact information, URLs and/or links are NOT allowed in signatures OR on forum! 23 GMC Yukon 3. LB7 cranks a LONG time before starting. Opened the filter housing bleed off, had fuel. A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. Once the key is placed in the ignition and turned to the 'run' position, the truck instantly starts cranking, and starts. 11-16 LML Duramax Powertrain Have a 2011, went to turn it on and it only started for around 3 seconds and turned off. 01-04. Only code is P0016- Crankshaft position to camshaft position sensor not plausible. Seems my son drove it a lot more than I knew about the day before. Sent from my iPhone using Tapatalk . Originally threw a p1550 code. It would just crank and crank and crank. If I wait for 5 minutes then it will run then die again. This happens very repeatable, as if something electrical is telling the motor to shut off. got really bad the last week. Once warm, then starts almost It always has before. Tags cranking lmm no (400 000km) that was running just fine but had a couple bad glow plugs. 2003 lb7 ECSB EFI Live by unleashed duramax tuning. I jumped it, it started and ran fine for a minute then it died. truck has 210K dpf delete and egr block off are the only mods. I’ve replaced crankshaft position As far as I can tell it is stock besides exhaust. Still low rail pressure and truck still wont start. Make sure both batteries are disconnected before you short + to - !! Chevy 04. Jump to Latest Yes, there are a lot of issues with the new trucks. Went to start it last night and it would crank for a couple seconds then stop. 5-2010 (LMM) LMM Cranking but not Starting. It does have a surge that you can hear on deaccel, but you don't feel it. 7E7B0B80-E642-4DCF 4" Turbo-Back Exhaust by Pinacle - Edge Juice with Attitude Monitor - Locked Wastegate (34 PSI) - CA670 Remote Start - Smoke lots and lots of smoke 06 Chevy LBZ CC 4x4 Work in Progress 4" Stainless Turbo Back - PPE Xcelerator Standard 285/75R16 Yokohama Geolander AT/S's Viper 5301 Remote Start My brother was over so I had him crank it over0 while I watched on the passengers side by the filter. Low pressure side 60-62 Compression test show 345psi on all cylinders except 400psi on 8. Has injector knock and lack of power that has gotten Looking for help, first time here. Before cranking, pump the primer, and My Fiancee's 03 LB7 is having to crank 5-7 seconds before starting. Especially when I drove the truck like 5 minutes before this all started happening. Prime button gets kinda soft after cranks but is hard after half of a pump. Any other thoughts would be greatly appreciated!! Oh and no codes. Had been around 8 days since I had started the truck Cranks over and over and over but will not start. Save Share Reply 2001 2500HD CCSB LS Duramax Hunter Green Efi Live from PPEI, S&B Intake, 3 in. 0 Facebook pages of people experiencing this on trucks with like 300 miles on them, hell I saw one the other day that had 60 miles on it and day 2 of ownership and it did it, and we all know there are no extra GM’s sitting on lots with a 3. If the Injection Pump Fuse blew it would cause loss of communication. sdtgxau gectpsp loh rbg gplwl jjbvl facdo vyztpj qkkzi dopqaol