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Transmission won't shift into overdrive when head/park lights are on

Tiny
KEVIN44
  • MEMBER
  • 1993 MERCURY TRACER
  • 150,000 MILES
Transmission shifts fine with lights off. But when you turn them on, the car will kick out of overdrive and then shifts poorly. If you turn lights off, it shifts and drives well. The car has 150,000 miles, a 1.9 engine, automatic-overdrive transmission.
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Wednesday, July 18th, 2012 AT 3:07 PM

3 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Wow, this is a new one. Has anyone messed with the wiring in the car? Lloking for somethign to do with the the trans wiring harness.

Roy
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Wednesday, July 18th, 2012 AT 3:41 PM
Tiny
KEVIN44
  • MEMBER
  • 2 POSTS
As far as I know, the wiring has not been tampered with especially. I have not had this care for more than a few thousand miles however
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Wednesday, July 18th, 2012 AT 3:56 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Without seeing it, I have no idea. You will need an electrical shop to track this down as it is a very odd situation.

Roy
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Wednesday, July 18th, 2012 AT 4:13 PM

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