85xjwoody
NAXJA Forum User
- Location
- Little Suamico Wi.
This one has me kindof stumped. 1998 Jeep Cherokee 4.0/aw4/231. I picked this jeep up a week ago and have replace quite a few parts and finally got around to trying to fire up the engine. After about 15 long tries it finally started and idled around 800rpm and stays there, but when I go to give it a little throttle I can only get up to around 1800rpm before it backfires pretty good out the exhaust. It starts a little hard but once started it idles pretty good but can do squat but backfire when I try to do anything else.
Parts that I have replaced brand new in the last week which could affect this include:
O2 sensors
cat converter
cap, rotor, plugs, wires
From some reading I have done today it seems like it could be a number of things and I don't want to just start tossing anymore things at this if I don't have to. I have unplugged, cleaned, and plugged back in the CPS, TPS, IAC, and CAM sensors and no change. I have no check engine lights on currently either. Any ideas out there as from what I have been reading it could be the CPS, TPS, CAM, o2 sensor fuse, a simple tuneup which I have done already, injector o-rings, and timing chain. I have a new TPS on the shelf I am going to go and try at the moment but any thoughts or ideas as to what a solution is or what your fix was is greatly appreciated. Thanks.
Kim
Parts that I have replaced brand new in the last week which could affect this include:
O2 sensors
cat converter
cap, rotor, plugs, wires
From some reading I have done today it seems like it could be a number of things and I don't want to just start tossing anymore things at this if I don't have to. I have unplugged, cleaned, and plugged back in the CPS, TPS, IAC, and CAM sensors and no change. I have no check engine lights on currently either. Any ideas out there as from what I have been reading it could be the CPS, TPS, CAM, o2 sensor fuse, a simple tuneup which I have done already, injector o-rings, and timing chain. I have a new TPS on the shelf I am going to go and try at the moment but any thoughts or ideas as to what a solution is or what your fix was is greatly appreciated. Thanks.
Kim