Need some diesel help..........

Sierra Stud · 10-01-2006, 12:23 AM

My mom's BF has a 04 Dmax LLY, and for some reason when he puts it into any gear it acts like its missing/studdering. Now it only does it under load, when he drives it he has zero problems. What could this problem be?

AzzKicker · 10-01-2006, 09:20 AM

Check for leaks in the fuel line and change out Filter. It could be under normal driving he's ok, but really working it, its sucking in air from a hose leak or bad filter somewhere. Also, I believe these trucks had injector problems that he may want the dealer to check into, the warranty was extended for them. But that may be earlier years, not to sure on that. Also sometimes the Fuel Primer on the Filter base can go bad and get Air into the system.

private snappy · 10-01-2006, 05:20 PM

i would check the fuel filter, injectors, and injector pump and regulator. the extended warr is 200,000 miles on injectors, but only for 2001 and 2002. 2003 and up still have the 100,000 warr on the motor with the $100 deduct.

TwoTone98Z71 · 10-01-2006, 07:13 PM

sounds like an injector.

red suburban · 10-01-2006, 09:37 PM

change the fuel filter, check for leaks in the fuel system, then if it still persists have the injectors tested.

Sierra Stud · 10-01-2006, 10:31 PM

Thanks alot guys, he had these problems before the replacement of his fuel filter, and he just changed it. He will be taking it in this week to get it looked at. Its just weird how he dosent have any problems other than when he has it in say "drive" at a stop, but when he starts moving there is no studdering and runs like a champ

dozerboy · 10-02-2006, 10:08 PM

Need to look at the injector wiring harness there is a chaffing problem on the 04s for sure IIRC.

Sierra Stud · 10-02-2006, 10:19 PM

Quote:

Originally Posted by dozerboy

Need to look at the injector wiring harness there is a chaffing problem on the 04s for sure IIRC.

Wow, I did not know that, I'll take a look at it. Thanks man!

chevytodd · 10-02-2006, 11:57 PM

I'm not that good with diesel motors... I got gas... From what I heard though I think it could be the injector too. Just a thought.

foreman00081 · 10-03-2006, 09:36 AM

ya, i hear a little gold bond powder helps with that chaffing!

duratothemax · 10-03-2006, 04:40 PM

LLY injectors rarely fail. 90% of LLY injectors are replaced because of a misdiagnosis.

10-01-2006, 12:23 AM	#1
Sierra Stud Gold Member Status: Offline Join Date: Dec 2005 Member ID: 37780 Pics: My Gallery Location: Colorado Age: 27 Posts: 1,179	Need some diesel help.......... My mom's BF has a 04 Dmax LLY, and for some reason when he puts it into any gear it acts like its missing/studdering. Now it only does it under load, when he drives it he has zero problems. What could this problem be? 2006 GMC 1500 Z-71, RC Leveling kit, 285's, Line-x'd bumpers.

10-01-2006, 09:20 AM	#2
AzzKicker Registered User Status: Offline Join Date: Jun 2006 Member ID: 49728 Pics: My Gallery Location: Edinburg, Tx Age: 27 Posts: 43	Re: Need some diesel help.......... Check for leaks in the fuel line and change out Filter. It could be under normal driving he's ok, but really working it, its sucking in air from a hose leak or bad filter somewhere. Also, I believe these trucks had injector problems that he may want the dealer to check into, the warranty was extended for them. But that may be earlier years, not to sure on that. Also sometimes the Fuel Primer on the Filter base can go bad and get Air into the system. Ruben 07' Chevrolet Silverado 2500HD Classic 4x4, EC/SB D/A, LBZ !!!

10-01-2006, 05:20 PM	#3
private snappy Registered User Status: Offline Join Date: Sep 2006 Member ID: 55095 Pics: My Gallery Location: so cal Posts: 85	Re: Need some diesel help.......... i would check the fuel filter, injectors, and injector pump and regulator. the extended warr is 200,000 miles on injectors, but only for 2001 and 2002. 2003 and up still have the 100,000 warr on the motor with the $100 deduct. 2004 1500, 14in bulletproof with 4in cst spindles, 38 pj's dirtgrip. k&n, thorley headers, 40 series. much more. 1993 2dr s-10 blazer lt tahoe, all stock baby!

10-01-2006, 07:13 PM	#4
TwoTone98Z71 I really am an a$$hole™ Status: Offline Join Date: Feb 2004 Member ID: 12022 Pics: My Gallery Location: Wyoming Age: 24 Posts: 6,891	Re: Need some diesel help.......... sounds like an injector. Ah rain.

10-01-2006, 09:37 PM	#5
red suburban Registered User Status: Offline Join Date: Apr 2006 Member ID: 46297 Pics: My Gallery Location: Eglin AFB, Florida Age: 21 Posts: 541	Re: Need some diesel help.......... change the fuel filter, check for leaks in the fuel system, then if it still persists have the injectors tested.


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10-01-2006, 10:31 PM	#6
Sierra Stud Gold Member Status: Offline Join Date: Dec 2005 Member ID: 37780 Pics: My Gallery Location: Colorado Age: 27 Posts: 1,179	Re: Need some diesel help.......... Thanks alot guys, he had these problems before the replacement of his fuel filter, and he just changed it. He will be taking it in this week to get it looked at. Its just weird how he dosent have any problems other than when he has it in say "drive" at a stop, but when he starts moving there is no studdering and runs like a champ 2006 GMC 1500 Z-71, RC Leveling kit, 285's, Line-x'd bumpers.

10-02-2006, 10:08 PM	#7
dozerboy Registered User Status: Offline Join Date: Mar 2005 Member ID: 25211 Pics: My Gallery Location: TX Age: 25 Posts: 969	Re: Need some diesel help.......... Need to look at the injector wiring harness there is a chaffing problem on the 04s for sure IIRC. These views expressed on this post are not my own, but rather randomly generated computer gibberish and in no way should be used to judge the author's IQ or mental health.

10-02-2006, 11:57 PM	#9
chevytodd Premium Member #53 An orange NNBS ?????? Status: Offline Join Date: Jun 2006 Member ID: 50205 Pics: My Gallery Location: Edmonton, A.B. Age: 29 Posts: 1,081	Re: Need some diesel help.......... I'm not that good with diesel motors... I got gas... From what I heard though I think it could be the injector too. Just a thought. 2008 GMC Sierra 1500 SLE RCSB 4x4 1999 Jeep Grand Cherokee 2.5" lift 2004 GMC 2500 LD CCSB SLT 4x4 (w/t)

10-03-2006, 09:36 AM	#10
foreman00081 IM MIKE D Status: Offline Join Date: Jun 2006 Member ID: 50102 Pics: My Gallery Location: Rochester, NY Age: 26 Posts: 1,348	Re: Need some diesel help.......... ya, i hear a little gold bond powder helps with that chaffing! 03 GMC 2500 HD crew duramax, 6" full traction lift. 37/13.5/20 Toyo Open Country MT's, ATS E-Power tuner, AEM intake, Stage 3 allison 452 RWHP/755 TQ verified on superflo dyno, 7/19/08 (ATS level 10) and thanks to Chuggs for the sig!

10-03-2006, 04:40 PM	#11
duratothemax Registered User Status: Offline Join Date: Aug 2006 Member ID: 53120 Pics: My Gallery Location: CT Posts: 63	Re: Need some diesel help.......... LLY injectors rarely fail. 90% of LLY injectors are replaced because of a misdiagnosis. '05 Silver-a-doo LT, CC/SB Dmax/Ally BIG spinny thing breathing thru two MBRP pipes, lots 'o fuel, and an unblowupable trans. Inside: Some Denali stuff, spaceship dials and guages, "missle launch" switch for the unsuspecting ricer

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