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CEL comes on

Tiny
FARMERJOE
  • MEMBER
  • 1996 CHEVROLET S-10
  • 2.2L
  • 4 CYL
  • RWD
  • MANUAL
  • 197,000 MILES
Every now and then the CEL (check engine light) comes on, when the codes are scanned it says bad crank sensor. Then two three days later CEL goes out on its own. The truck runs good, but mileage suffers when light is on. Am I missing something or could this be a wiring problem that is weather related? Light will come on in rainy or damp weather.
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Friday, July 21st, 2017 AT 10:24 AM

1 Reply

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
It may be a bad/poor connection. Try replacing crank sensor and using dielectric grease at connection. Also, check for build up of sludge on crank sensor it can effect it. See picture.
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Friday, July 21st, 2017 AT 12:15 PM

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