1991 Dodge Ramcharger Speedo Doesnt Work Truck Been Runing About 30 Min Tranny

1991 DODGE RAMCHARGER
176,000 MILES
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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.
Dec 12, 2012 at 3:46 PM
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RASMATAZ
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Do you have a check engine light?

Check the Overdrive Control Module Behind right center of instrument panel.
Dec 12, 2012 at 4:07 PM
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BMRFIXIT
  • ✓Experienced Mechanic
  • 19,053 POSTS
I think you have two speed sensors an input and output (speed sensors)
if you replace just one should do the other
Dec 12, 2012 at 4:09 PM
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