Question about 1989 Jeep Cherokee

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1989 Jeep Idle Races at startup

1989 4.0 L Jeep cherokee laredo, at cold startup the engine rpm's race. Have to shut it off 4,5,6 times to get it to idle at normal speed. Is this the idle control sensor or some other idle control part? Thanks

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  • gregglack Nov 01, 2008

    Just Bought a 1989 Jeep Cherokee Pioneer Just started to RACE at start up. The Car was fine and I drove about 300 miles in a day then parked it and went out for a short drive and it felt like the cruise control was stuck on but later when checking it out all cables worked to the intake manifold, I would have to say is it something with VACCUM? Do not know the car starts and races the engine speed.

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  • Master
  • 360 Answers

Yes its the iac "idle air control" they go bad also loose batt conections cause this problem good luck

Posted on Sep 20, 2008

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