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1989 Chevy Celebrity Intermittent speedometer

Tiny
MAPLECYBER
  • MEMBER
  • 1989 CHEVROLET CELEBRITY
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 70,000 MILES
I am experiencing problems with my car. I just bought it and driving home I noticed that the engine light was on and the speedometer was not working at all. The car would idle high at a stop or would idle rough and die. Once I got to highway speed the speedometer started working again.

I have pulled two codes from the computer. 14 and 33 which are ECT an MAP codes. I hope the computer isn't faulty.

Any help would be greatly appreciated.

Thanks:)
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Tuesday, October 19th, 2010 AT 7:25 AM

1 Reply

Tiny
BLUELIGHTNIN6
  • MECHANIC
  • 16,542 POSTS
Hello and thanks for donating

The MAP and coolant temperature sensors share the same wiring. I would suggest inspecting the wiring at both of these sensors. Ensure it is connected properly and not loose or damaged.
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Tuesday, October 26th, 2010 AT 5:18 PM

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