Crankshaft position sensor location needed

1991 CHEVROLET CORSICA
70,000 MILES • 3.1L • 6 CYL • 2WD • AUTOMATIC
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CRAIGCHAP
  • MEMBER
  • 1 POST
Car has been starting fine, but shuts off within a few minutes by the time it gets close to operating temperature. Symptoms sounded like ignition control mod or crankshaft position sensor. I changed out the ignition control mod and car started up and ran great for about 4 minutes, then shut off again. Now won't start, which is another symptom of crank position sensor. Can't find location of the crank position sensor. Some sites say between engine and transmission on back of engine, but I can't see it. Do you have to remove something else to see it and get to it? Thanks for any help on this one.
Apr 7, 2021 at 11:14 AM
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KASEKENNY
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 18,907 POSTS
I agree that it sounds like one of the two. Crank sensors normally don't restart until the cool down so that is one indicator. Here is a guide that will help with this:

https://www.2carpros.com/articles/symptoms-of-a-bad-crankshaft-sensor

I attached the process, location, and idle learn procedure below. Let us know how you make out. Thanks
Apr 8, 2021 at 6:49 PM
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