1991 Toyota 4Runner not shifting to overdrive consistantly

Tiny
TYLERLIGON
  • MEMBER
  • 1991 TOYOTA 4RUNNER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 125,000 MILES
When I first start it it won't go into overdrive, if I restart it will sometimes, but then when it gets to a certain point it will drop out of overdrive and then will only go in intermittantly. All other gears and shifting into them are fine. Any ideas?
Wednesday, August 12th, 2009 AT 3:49 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check all these sensors coolant temperature, throttle, and vehicle speed sensors the computer uses these input signals from this sensors to command and control the transmission upshift/downshift/overdrive/lock-up etc-
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Wednesday, August 12th, 2009 AT 4:03 PM

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