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So, I'm building an 87 Comanche. I'm using a 91 HO Cherokee for the engine, transmission, T-case, electrical, dash and so on. Started a awhile back. So, I bought a new CPS sensor. Started installing it. And I'll tell you what, I have quite a few choice words for the guy that decided that location was a good place. I hope he suffers an eternity of having to replace these. On a clean truck, not bad, but on a well driven one... I spent hours trying to get it installed. The dang bolts won't thread in the holes, with sensor. But, sure as hell, I can hand thread with out the sensor. put the sensor back, and put the bolts in, turn for F-N hours, and never grab a thread. Well finally get dat b!tch up, and start to connect it. I can't find the matching connector on the harness! W.T.F!!! I've read there may have been a service bulletin to relocate connector to inside the cab. Take dash apart, and I can't locate a matching connector. I have 3 other XJ / MJ's to compare. 2000 XJ, CPS looks like it connects to harness with the transmission on passenger side. My 91/87 MJ no have that... 1990 MJ, CPS is connected to a GM style connector off the injector harness. My 91/87 MJ no have that same style plug.. Now, there is an un used round 3 pin connector on the injector harness. I always figured it was for a different TB. So, I goto Autozone, and have them show me a CPS from a 91... Damn it!, looks like it uses a round connector. So, I just spent some time in CPS HELL, and installed the wrong damn sensor... Now, I got to remove that sensor, buy correct one, and pray I can install in less then 8hr... before all this started, I went to a u pull it salvage yard, and pulled a CPS. It only took me 10min to remove it. I wanted to bolts, cause I did not know the size needed, I figured if I was going through the pain of installing a CPS, I may as well start with correct bolts. The F N issue is I could not get the bolts to bite as I turned the wrench. I used paper to make sure the bolt was not sliding down into the socket... Anyway, for thats don't know, there are different plugs on the CPS used. now I know. I'm debating on just cutting both ends off and putting on GM style weather pack connectors.

I think I have read somewere they make a high altitude crank sensor for RENIX 4.0's at what altitude are these needed and how are they at sea level? I have found that at 3,000-3,500 feet it cranks alot longer than at lower elevations. Thanks,