98 Cherokee Runs terrible cold but good warm
Hey. My cherokee runs terrible when i first start it up, it misses and sometimes stalls. it smells like its running very rich also. Once it warms up to 210 it runs pretty much perfect.. I had an issue with it randomly running bad while driving and idling and i replaced the upper o2 sensor and it was fine. about 2 days later this problem started. I have replaced the TPS IACV Air temp sensor in the intake.. Im thinking it may be the ECTS but my temp gauge works fine so im not sure.. also plugs wires cap and rotor are pretty new. Anyone have any ideas? thanks in advance
It's the crank sensor!
Have you put a scan tool or a code reader on to see if you have any stored codes?
99 Cherokee, 4.0 AW4, NP242
Past Jeeps: 49 Willys, 81 Scrambler, 88 Comanche
Without "data", all you have is an opinion!
|Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)|
|Thread||Thread Starter||Jeep Forums||Replies||Last Post|
|runs great cold but when warm it runs bad.||flaneryjunior99||XJ Cherokee Technical Forum||4||07-09-2011 06:29 PM|
|cold start good idle - engine gets warm and low idle||ahuf||XJ Cherokee Technical Forum||9||01-30-2011 04:17 PM|
|New member can use a little help. XJ runs warm?||mula||XJ Cherokee Technical Forum||19||12-12-2010 08:27 AM|
|AC cold 10 minutes, warm 20, cold 10...||js5278||XJ Cherokee Technical Forum||9||06-18-2010 03:56 PM|
|Runs rough when warm, help||Hendo_10||XJ Cherokee Technical Forum||4||01-03-2006 03:50 PM|