High idling upon start up!
I have a 02 jeep grand cherokee Laredo. When starting up car runs at about 1800rpms after a few minutes goes down to about 1400. Then runs between 700 and 1000. Any suggestions? Thank you in advance!
Clean your Idle Air Control valve on the throttle body.
2002 WJ Overland - 4.7HO - 231tc - 6" Clayton - 285/75-16 Cooper STT - ProComp 5129 wheels - Kevin's Offroad Belly Skid and Rock Sliders - JKS Track Bar and Disconnects - ProtoFab bumpers
Just had the same thing on the Overland I just bought and it was the TPS. So if the IAC doesn't do it try replacing the TPS. Both are right next to each other. Also if the TPS is going bad a lot of times you'll have other symptoms like wanting to kick in and out of overdrive on the highway.
No. That sounds normal. You'd see the rpms bouncing up and down as the overdrive kicks in and out but the speed stays the same. As the TPS gets worse you'll really know as the transmission starts going crazy and doesn't know what gear to be in. From what you described it sounds like the TPS is ok and I'd work on cleaning the IAC and see if that does the trick.
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