Question about 1987 Chevrolet R20

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1987 chevy van with 350 engine runs rough intermittently then seems to fix itself then does it all over again. Runs rich when it does it. Check engine light is on.

Engine is warm. Will do it when taken out in the road, then pull over, giving it a chance to go to idle again. Runs ok at higher rpm. Does not do it on every instance.

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  • Chevrolet Master
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Have you checked the computer for trouble codes yet ?

Posted on Jan 08, 2013

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Posted on Jan 02, 2017

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SOURCE: chevy 350 express van 2000 runs great idles rough

If it does not do it in park or neutral, it could be a number of things. One being a sticking Torque Converter Clutch solenoid (TCC). It could be that it needs a simple tune-up. How often does this problem happen?

Posted on Jun 30, 2009

  • 341 Answers

SOURCE: 1989 chevy 350 automatic, white smoke

white smoke is antifreeze try checking the compression

Posted on Nov 08, 2008

  • 1 Answer

SOURCE: I have a 1992 camaro at idle its ok . In gear low rpm rough runin

I worked on one of these the other day and what fixed the same problem it sounds like is I changed out the distributor cap and rotor. the rotor can be a pain to get off. and also don't cross any plug wires take one off at a time and put it on the new one.

Posted on Jul 06, 2009

mikewrobe545
  • 1 Answer

SOURCE: 2005 chevy trailblazer 4.2 engine. Was driving on

Sounds like it is the EVAP and I think there is a TSB on this that the dealership should fix for you.

Posted on Jul 10, 2012

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