Problems with Idle RPM way too high.
I've had my Wrnagler TJ for about 4 years now, and when ever it gets cold here in TX my Idle RPM's are about 1500. In trying to fix this problem I haveput on a Brand new TPS and IAC on the throttle body. After doing so the jeep now starts off Idleing fine when the engine is cold but as it warms up it will climb to close to 2000 RMP when out of gear, and when its in gear and moving it will go back down to lower RPMs until you hit that red traffic ligh and it jumps up agian. I dont know if it effects anything but it also has a AEM intake that has been there since i bought it... Again this usually only happens during the winter. Does anybody have any suggestions as to what the problem might still be?
check the bolts on your exhaust manifold and check for any leaks in your exhaust. if you have an exhaust leak, you will idle higher. typically, if any bolts are going to be loose, they are the two closest to the firewall. when I had your problem, they were only finger tight.
98 TJ Currie arms-RC 2.5 coils-RC 2.0 shocks-1.25 BL-TF rear track bar-custom bumpstops-mud-scratches-gas.
|idle , rpm , throttle body|
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