Question about 2002 Jeep Liberty

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Jeep liberty 2002 will not idle when you first start it if you make it run at about 2000 rpm for about 3 min it will stay running

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Check temperature sensor. I don't remember if your vehicle has two (one for the gauge, one for the computer) or a single unit that feeds both. If seperate (your parts house should know this) change the one that feeds info to the computer.
Essentially this sensor does the job of the choke on the carburetor on non-fuel injected vehicles, by allowing additional fuel into engine on cold-starts. After engine comes up to operating temp, it reverts back to normal run mode... (why you need to warm it up at excessive rpm before driving!) Good luck!

Posted on Dec 17, 2008

  • Richard Scordino Dec 17, 2008

    PS: A small vacuum leak can also result in similar symptom. Generally though, after warm up the idle will be a bit higher than normal or the idle will be a bit rough. You made no mention of this in your post!

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