IAC opens when cold
#1
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Year: 1990
Model: Cherokee (XJ)
Engine: Renix 4.0
IAC opens when cold
Lately it's been around 30F. Sometimes the IAC opens all the way making the engine idle around 2000rpm. This is especially annoying when I'm driving and it doesn't like to slow down.
Could it be the IAT? It runs just fine and idles normally after it warms up.
Could it be the IAT? It runs just fine and idles normally after it warms up.
#3
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Sounds more like a TPS issue with a coincidence of cold weather thrown in.
#4
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Year: 1989
Model: Cherokee
Engine: 4.0
I would have to agree with Cruiser, usually if an IAC goes bad or gets dirty they will cause a no idle condition when it gets colder out. The vehicle will only stay running if you keep your foot on the gas until the engine reaches operating temp. High idle from what I have dealt with in the past was caused by a bad TPS. I'd start my XJ up after it sat all day at work and it would shoot right up to 2K. Shut the XJ off and wait few seconds then restart and it would be fine. Since replacing the TPS it no longer does this. 30 degree starts in the morning for a few weeks now and no issues.
#5
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Year: 1990
Model: Cherokee (XJ)
Engine: Renix 4.0
I'll replace the TPS later today and get back on here.
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