97 5.0L Vortec will die off idle when accelerating.

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GM Guy

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Hey all,

Have a friend with a 97 GMC C1500 5.0L V8 5spd 2wd, and he is having issues.

You can start truck, idles fine, accelerates fine, but when you let off and let it go to idle, and then try to accelerate, it will die.


He changed the TPS with no affect.

Do you think it could be the IAC valve? Would the EGR have anything to do with it?

What about the MAF?

Fuel pressure should be good as the pump is new, and once past idle it runs fine and has good power, so I doubt it has anything to do with fueling, but I am not denying it as a possibility.

His son has a code reader, and he will get ahold of it as soon as he can, so no codes for now, the CEL is on though.
 
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