Question about 1994 Chevrolet K1500

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1994 6.5l turbo diesel, When idling in park or in nuteral engine will just shutoff all by itself after a few minutes. What could be causing this.

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Probably the PMD is bad.. Suggest getting a cooler and wiring harness kit with a new PMD. Fix> Locate the PMD cooler in front of the grill and most of your stalling problems can be solved.

HotRod O---{oII] DieselPro

Posted on Jul 27, 2010

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How do I keep my cz550 running for longer than 3 minutes before cutting off


if this a diesel engine with a controlled shut down after turning the key off, there is no need to extend the idle period as 3 minutes is ample time to allow the turbo to slow down and cool down
understanding how a turbo works is the key to the answer as the turbo is already cooling down and slowing down as you are coming to a stop and the extra 3 minutes is a safety period to complete that process
If you are concerned about a turbo failing then there is an accumulator that can be purchased after market that is fitted to the oil circuit of the turbo
It has a bladder in a case and oil pressure pressurizes that bladder so that when the engine is stopped , that oil is pushed back through the turbo bearings It can be fitted to any turbo engines
it is particularly useful for engines that are subject to stall conditions such as 4wd that are operating in conditions where clutch operations causes the engine to stall
however to answer your question , there may be a small adjustment in the side of the timer box or in the box that can be reset to longer time
however long idling of an engine is not good for the wear factor of the engine

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part blocked exhaust will have same problems but will more generally cause a lack of power and acceleration.
are there other symptoms? i.e only when conering or only when pulling off or stopping, engine light on/off. Jon

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1 Answer

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you did not mention but if it is a turbo diesel there may be a timer that keeps the engine running for a few minutes to allow the turbo to cool down.

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Not on a Gas engine, but diesel engine yes.

Diesel engine white smoke means leaking head, intake, or your turbo is not working.

Gas engine leaking intake would only cause rough idle, no power, etc,,,,

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Hi Whitewolf108,

Is your vehicle a turbo diesel? or if it's petrol, again does it have a turbo?.... The turbo can often cause the effect that your explaining, regarding the orange glow from the exhaust manifold.... To give any more advice, I'll need more info from you....Example: do you live at a high altitude?.....The type of engine?....Any modifications bolted on?.... When did the idling become too high, was anything done to the carburation around that time?

Regards Johngee10

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