Question about 1985 GMC K1500

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My 1985 GMC truck starts fine, but once it warms up, it dies everytime you let off the throttle and will not restart. I had the carburator worked on and it did better for about 5 days before it started again.

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Bypass knock sensor if you have it and replace ignition module

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Adjust choke flap and or choke pull off.

Posted on May 19, 2009


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85 s15 hesitates/sputters

check for a faulty / blocked accelerator pump /circuit as this fits the lack of fuel squirt on acceleration description. Also check the timing of the ignition.

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This sounds like an ignition problem. Check the ignition coil. Low spark voltage can cause this. As well, the amplifier module in the HEI distributer could be at fault.

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I got a 1998 jimmy with the 4.3 vortec. Engine my wife was driving it when all of a sudden it started to spit and sputter and die out it would start up fine and idle great but as soon as you go to push the...

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The EGR valve is sticking. Remove and clean with fluid filum or white grease and u should be fine for a while or just replace it for they don't cost to much.Hope this helps.

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