1991 Toyota 4Runner not shifting to overdrive consistantly

1991 TOYOTA 4RUNNER
125,000 MILES • 6 CYL • 4WD • AUTOMATIC
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TYLERLIGON
  • MEMBER
  • 1 POST
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?
Aug 12, 2009 at 8:49 AM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 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-
Aug 12, 2009 at 9:03 AM
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