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Hope that fixed your problem for good. I never replaced my cats, and for that matter my O2 sensors. I cleaned the throttle body and used some Seafoam, great stuff! WARNING- follow the instructions and read the posting about this stuff or you could cause even more major problems. I think the CEL...

I have a '96 4.0 2wd XLT. It has a 103000 miles and other then tires, brakes, plugs and thermostat, has required very little corrective maintenance since purchased with 34000 miles. I installed a K&N air filter about 2,000 miles ago. Here are my symptoms, any thoughts? -Intermittent Check...

thanks Alec Didnt read carefully enough, thaks for the push in the right direction. Jim:us:

none for 96 I went to the truck performance site and no cats are given for '96 4.0. I want one that wont give me any more codes. I have never changed my o2 sensors, is there a good place where I can pick them up and save a few bucks in the process. I cant help myself, just like to get a good...

same problem My check engine light just came on as well. I had the code scanned and wound up with a 0420, at Autozone. It seems to be pointing towards the cat. My question is should I have a more in depth scan done, or pull my batt cable and see how long it takes to reappear? I would like to...