2000 Chevy 3500 Won't stay running. - Chevy and GMC Duramax Diesel Forum
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Old 08-28-2010, 07:13 AM   eBay Motors  #1 (permalink)
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2000 Chevy 3500 Won't stay running.

Have a 2000 Chevy HD 3500. Was driving it and it surged hard, and then speed up without touching the throtle. Pulled over, and it would just surge and die, surge and die. It didn't matter where the acc. pedal was. Got it home. Now it starts and dies. I have replaced the PMD last year. Was running fine. 99,000 miles on it. Was wondering if a dirty fuel filter could cause the problem? The injector pump was replaced once. Has anyone had a problem with the wiring harrness?
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Old 08-28-2010, 02:23 PM   eBay Motors  #2 (permalink)
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Where is your pmd located?
What type of pmd is it? D-TECH?
Surge and die could also be air in the lines if you have a leak pre lift pump-sending unit with a hole above the fuel level or a fuel line with a hole in it.
Do you have lots of fuel at the filter bleed valve?
Have you opened the water in fuel drain/T valve with the engine running to check flow and the condition of your lift pump?
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Old 08-29-2010, 07:24 AM   eBay Motors  #3 (permalink)
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My PMD is mounted out of the tunnel on a heat sink. Got it from ss diesel last year. The fuel pump is pumping fine. It is in the wiring harrness connector between the firewall. If I reach up and grab it and move it back and forth, I can get it to start. I'm sure it is the reason the othe things are happening. How do I take it apart to check out the connectors? Something is wrong.
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Old 08-29-2010, 10:28 AM   eBay Motors  #4 (permalink)
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I don't have your model year near me but most of the firewall plugs I've seen are held together with a small bolt in the center of the loom/connector,yours might be different though.

Last edited by racer55; 08-31-2010 at 11:23 AM.
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Old 08-30-2010, 10:23 PM   eBay Motors  #5 (permalink)
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The fuel pedal itself is known to go bad in these. Mine went bad once. However, my SES light came on and my pedal wouldnt work at all.
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2006 Silverado 2500HD LBZ CC SB
Exterior: Escalade Handles, Front windows tinted to match the rear, painted bumpers & mirrors, billet grille, 305/50/20 Cooper Zeons on BMF Novakanes Death Metal, Cognito Braces, Stainless Sleeves, Train Horns
Interior: 4 Kicker 10in Subs in 2 custom box's, Autometer Ultra lite II Pyro and Boost gauges, Aeroforce Interceptor Gauge, HID Lows & Fogs, Painted accents
Performance: EFI Live Tuned by Blackout Performance, Custom Blackout Performance S475 over stock twins, 45 over stock injectors, MBRP Turbo Back Stainless Exhaust (Straight piped), Raptor Lift Pump, AFE Filter, GMAX6 kit with Suncoast 1057 converter installed by Blackout Performance
1999 Ford F-550 PowerStroke ''Wrecker'' **Jerrdan bed, S&B Intake
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Old 09-16-2010, 05:23 PM   eBay Motors  #6 (permalink)
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Well took into the dealer. It turns out that the Injection pump and Pmd are bad. Still covered. Was replaced at 30,000, and just turned 100,000. Never had a problem like that happen!
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Old 09-16-2010, 08:17 PM   eBay Motors  #7 (permalink)
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Wow its still under warranty? You got damn lucky there!
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Jason
2006 Silverado 2500HD LBZ CC SB
Exterior: Escalade Handles, Front windows tinted to match the rear, painted bumpers & mirrors, billet grille, 305/50/20 Cooper Zeons on BMF Novakanes Death Metal, Cognito Braces, Stainless Sleeves, Train Horns
Interior: 4 Kicker 10in Subs in 2 custom box's, Autometer Ultra lite II Pyro and Boost gauges, Aeroforce Interceptor Gauge, HID Lows & Fogs, Painted accents
Performance: EFI Live Tuned by Blackout Performance, Custom Blackout Performance S475 over stock twins, 45 over stock injectors, MBRP Turbo Back Stainless Exhaust (Straight piped), Raptor Lift Pump, AFE Filter, GMAX6 kit with Suncoast 1057 converter installed by Blackout Performance
1999 Ford F-550 PowerStroke ''Wrecker'' **Jerrdan bed, S&B Intake
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Old 10-09-2010, 07:42 AM   eBay Motors  #8 (permalink)
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Ok...so they replaced the injector pump and PMD under warranty. It lasted two weeks! Didn't even burn a tank of fuel. GM is sending another pump. Question.....Is anyone having any trouble with the fuel? I can't understand y it would go so quick!
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Old 10-09-2010, 04:59 PM   eBay Motors  #9 (permalink)
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Many people advise adding outboard 2 stroke oil to the fuel at a ratio of 1 part oil:100 parts fuel.
The ULSD is hard on these pumps because they were never engineered for that type of fuel.
There have been varying reports of biodesiel being a good substitute but it sounds like the bidiesel quality is random at best.
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