Question about 1988 Chevrolet C1500

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My 88 chevy cheyenne has a problem with a fast idle. I don't know how to slow it down. It is a fuel injection throttle body set up. I can't afford to just start replacing parts till I find the problem. Any idea what it might be? It is a 4.3 v-6 auto. 2wd. Thanks Dave

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One easy thing you can try is spray some carb.or brake cleaner around the throttle body area.The gaskets on these were known to go out and this will cause a fast idle.The other thing is make sure the throttle cable or linkage is not sticking or binding.Hope this helps.Good luck.Let me know what you find out.

Posted on May 12, 2010


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SOURCE: My 88 chevy cheyenne has a problem with a fast

there are 2 main things that cause fast idel. the first is the computer is malfuntioning and the second is the TPC throdle posistion sensor

Posted on Mar 18, 2010

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