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'95 6.5 turbo & random stalling???

Created On Thursday 1, January, 2004 6:06 PM by guess1

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[q]Sounds like the problem I just had. First start by checking that your OPS and lift pump are working correctly. If they are and your fuel filter is relatively new then you can probably narrow it down to the PMD. I just had mine go out and had the same symptoms. If it is the problem I would also remote mount it, and there are kits available for that.[/q]

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guess1

Posts: 1
Joined: Jan 2004

Thursday January 01, 2004 18:06

My truck, when cold will start and sometimes run fine, and sometimes stall within seconds. Sometimes it will immediately start back, and other times may take 5-10 minutes to start again, run a minute or a few seconds, stall again, etc. Other times it may run fine, as I drove it 50 miles with no incident a few days ago. There is no miss or skip, but when it stalls, it's like the key has been switched off. I am new to the diesel arena, but am familiar with other gasoline engines. I have done searches which say anything from fuel pump to oil pressure switch to a range of other problems......however, when it's running, there are no problems and it runs very smoothly.......any advice is appreciated!

PS it is a work truck from my company, and has sat for a while in our parking lot.....sometimes for weeks w/out being started if that makes any difference.

Thanks for any input.

Jeff

Edited: Thursday January 01, 2004 at 18:49 by guess1

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kapnD

Posts: 8
Joined: Dec 2003

Sunday January 04, 2004 16:05

I believe your engine is starving for fuel. Diesel systems must have an uninterrupted source of clean fuel. On my diesel trucks I've experienced all kinds of fuel problems involving fuel suplly, starting with dirty tanks, plugged intakes, faulty selector switches, plugged vents, loose fittings, bad primary pumps. Then, at the engine, it's dirty or loose filters, broken check valves, faulty injection pump, bad glow plugs (or their control system), loose return fuel fittings, bad injectors, etc. Not a pretty picture at the outset, but once you become familiar with it all, its not so bad. Get the Hanes Techbook, follow the instructions, and soon you too will be telling people how easy it is to fix diesel motors! good luck!

>From: post2dieseltalk@dieselenginetrader.com

>To: sixshooter@hotmail.com

>Subject: FTCID24 FTTID385 '95 6.5 turbo & random stalling???

>Date: Thu, 01 Jan 2004 18:06:17 -0500

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Beccaraptor

Posts: 1
Joined: Jan 2004

Tuesday January 06, 2004 19:47

Sounds like the problem I just had. First start by checking that your OPS and lift pump are working correctly. If they are and your fuel filter is relatively new then you can probably narrow it down to the PMD. I just had mine go out and had the same symptoms. If it is the problem I would also remote mount it, and there are kits available for that.

-------------------------
1995 2500HD 6.5 Turbo Diesel 4 x 2

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etkeeny

Posts: 1
Joined: Jan 2004

Friday January 16, 2004 20:02

I am also new to the diesel arena, having just bought my first a 1999 6.5 turbo diesel in a 3500 series chevy express cargo van. I have been doing alot of reading to find out what I am up against, and it seems the most common problem with the gm diesel is that the PMD (pump mounted driver) is a small electronic control device that is mounted under the intake manifold on the drivers side of the injection pump, in the valley of the engine where high temperatures and electronics just don't mix. There seems to be a simple solution to the problem though, and that is a remote mount kit which relocates the pmd to the firewall and mounts it on a heat sink (I found one at http://www.duramax.bizhosting.com/) of course that begs the question of why does gm still mount the pmd on the side of the injector pump and not remotely? I have a theroy, the gm 6.5 diesel engine is built as a stand alone unit, that is it fits more aplications than just trucks, I.E. marine applications, generators, construction equipment, In fact after doing a little research it seems more engines are shipped worldwide for industrial use than use in motor vehicles. So it makes sense to mount the pmd on the engine were it will not get lost or dammaged or have to be mounted in whatever application it ends up in. Unfortunatly it's in a bad location in an enclosed compartment and as with any electrical device will have a significantly shorter life when exposed to high temps. Hope this helps.

Edited: Friday January 16, 2004 at 20:21 by etkeeny

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