Question about 1994 Chevrolet C/K 3500

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6.5 3500 turbo diesel is jerking on deceleration/letting off fuel or decline. There is an abrupt **** or while cruise control is on and on a decline engine will start to buck and **** until you accelerate or brake. This is a Chevy 6.5 3500 Turbo diesel manual transmission. Please-Please Help!!!!!!!!!

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  • cindyhampton Jul 27, 2009

    It only does it when you let off gas or when cruise control tries to hold you back like when going down a hill. It does not do it when you push in the clutch. It is kind of like on an automatic when a torque convertor is trying to lock up. But this truck is a manual transmission. Does anyone know what could the problem be????????

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Its the fuel cut off valve locate on top of the fuel injector pump. shape like cylinder
to test it remove it from the pump.plug back wire turn the key on.but (don;t start) the black rubbber should pull back. if not it broke.Auto sale $278.00
Ebay $89.00

Posted on Nov 24, 2011

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I have a 94 K2500 that was doing the same thing until it stopped one day and wouldn't start. I disconnected the harness from the PMD and plugged it into my backup PMD, one I still had mounted on the side of the pump. Started right up. I checked several other things and it came back to the PMD. I installed a new PMD and have driven it a couple hundred miles. The jerking as you described has completely disappeared! The cruise control works great up and down hills. The jerking must have been the first symptom of the PMD failing. My truck is running great!

Posted on Oct 01, 2009

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Does it do when the clutch is pushed in or when you let off the gas jkyjkyjason@aol.com

Posted on Jul 27, 2009

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