CAR

  • Tiny
  • tweezy1325
  • 1991 Mercury Marquis
  • V8

My 91 grand marquis overdrive gear wont work past 40 mph is that normal

Saturday, February 12th, 2011 AT 8:25 PM

1 Answer

  • Tiny
  • Jacobandnickolas
  • Expert
  • 68,287 posts

The overdrive should work after 40mph not before. If the check engine light is on, have the computer scanned for trouble codes.

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Sunday, March 13th, 2011 AT 3:51 AM

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