ENGINE WON'T IDLE

1989 GMC C3500

Tiny

tootallshadow

December, 3, 2008 AT 9:25 AM

Engine Mechanical problem
1989 GMC C3500 V8 Four Wheel Drive Automatic 151000 miles

I have a 1989 GMC 454 with a throttle body injection. It will idle at 1050 rpm when cold then when it warms up the engine will not idle at all. Could you point me in the right direction as to what the problem might be, thankyou.

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Dies On Idle

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