Chrysler Repair: repeated crank position sensor failure: 2.5L V-6, maximum radius, pilot hole


Question
Hello Roland:

First let me thank you for helping me resolve my problem with my 1998 Sebring JXI no start. The car died on the highway and I had it towed home. Replaced cps per your posts on this subject. I had to drill out the old one because I tried with a small drill to make a pilot hole to run a screw in to pull it out but the material was like powder. I was finally able to pull the lower part of the cps out whole. No, I did not nick or drill into the cps boss on the trans case.

Then six months later the cps failed again in the exact same manner. So I had to replace it again but this time the cps came right out and so now the car is fine. Both replacement cps came from the same parts store. Car had 150k and 153k at failures.

In each case I did get a cel and since I was under the hood replacing the cps I had the battery disconnected so it cleared the cel both times.

What would cause the repeated cps failures?

I did not have much of a cps left the first time but the second bad cps has major differences in ohm values compared with the new one.

Also who is the engine mfr for the 2.5 sohc.     

Thanks again for the service you provide.

Answer
Hi Keith,
About the only thing I can think of for the cps failure is possibly a flex plate that is not 'true' any more or maybe a rear main that is allowing the crank to oscillate a bit too much. You might try putting a micrometer in and rotating the engine to see how much the surface against which the cps is touching is moving in and out, then put it in (with a new spacer) with the rotation of the engine set to the maximum radius position of the plate.
I think Mitsubishi made the 2.5L V-6.
Roland
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