I had a 1988 Jeep Comanche pickup, 4.0/AT, and I discovered that thru about '91, Chrysler didn't change much from the AMC/Renault "Renix" electronic engine controls. So I borrowed a friend's Snap-On scan tool. As far as extracting "codes," I don't think that's possible with this system, but you can start the engine and read real-time data, and use that to determine what's out of recommended specifications.
So find someone with a scanner and the proper Jeep software for that year, and you should be able to determine the cause and cure for your problem pretty quickly. Better to spend $50-$100 on diagnostics than spend $200-$300 on unnecessary parts...right?
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Today's Featured Article - A City Guy's First Tractor - by Fred Hambrecht. After living in apartments in Atlanta for more years than I care to remember, the wife and I decided to move to the country. Humming "Green Acres is the place for me..." we purchased a 29 acre tract about 60 miles south of Atlanta. Next came the house, I could talk about that ordeal for another two weeks... But, I want to talk about my tractor! We didn't even own a lawnmower, and all of a sudden we had enough grass to feed all the starving children of the bovine world. Naturally, I talked
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