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MY SPEEDO DOESNT WORK WHEN THE TRUCK HAS BEEN ...

  • Tiny
  • Anonymous
  • 1991 Dodge Ramcharger
  • 176,000 miles

My speedo doesnt work when the truck has been runing for about 30 min. And the tranny wont shift into over drive when it does this. I have changed the speedo sensor on the transfer case.

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Wednesday, December 12th, 2012 AT 11:46 PM

2 Replies

  • Tiny
  • rasmataz
  • Member

Do you have a check engine light?

Check the Overdrive Control Module Behind right center of instrument panel.

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Thursday, December 13th, 2012 AT 12:07 AM
  • Tiny
  • BMRFIXIT
  • Expert
  • 19,553 posts

I think you have two speed sensors an input and output (speed sensors)
if you replace just one should do the other

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Thursday, December 13th, 2012 AT 12:09 AM

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