I have a 1996 Jeep Cherokee XJ - 230,000 miles - automatic - 4.0 Oval Crankshaft position sensor. The aftermarket part went out and I ordered 4 cheap replacements, which crank the engine but won't recrank when turned off. I ordered a standard product and it won't even crank. The same applies to a CROWN Position sensor. I then ordered a MORPAR product, and it wouldn't crank. When checked with an ohmmeter they had bad resistance. I was told that I had to follow a certain process to reset the computer and all. I've tried tried all the ways I was told to reset all, but nothing works. I've received a warranty MORPAR part, but am scared to put it in. I had been driving the jeep for 2 years without problem and it I pulled in, turned it off, and it wouldn't crank the next morning. The battery had been tested and was bad. I replaced the battery and that didn't help. Can you help me in any way, Scotty?