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2002 Toyota 4Runner Shifting problems when cold

Tiny
HOBOJOE
  • MEMBER
  • 2002 TOYOTA 4RUNNER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 150,000 MILES
2002 Toyota 4runner automatic, V6, 3.4L, with 150,000 miles - transmission won't shift from 1st to 2nd gear until driving car for about 1 mile. The RPMs increase when pushing on gas pedal but transmission won't shift. Problem occurs when the outdoor temperature is below about 50 deg.F. Same problem occurs after car is driven and sits for about 6 hours in 50 deg. Or less weather. After warm up period, problem goes away. Transmission fluid and spark plugs were replaced at 120,000 miles. However, problem existed before this work was done.

Any advice would be greatly appreciated.
Thanks!
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Sunday, May 3rd, 2009 AT 2:26 PM

2 Replies

Tiny
ZACKMAN
  • MECHANIC
  • 4,202 POSTS
I am not an expert on transmission, but based on your info, I believe your trouble may be around your ATF temperature sensor, located on side of transmission.


https://www.2carpros.com/forum/automotive_pictures/55316_024runneratftempsensor_1.jpg

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Sunday, May 3rd, 2009 AT 10:58 PM
Tiny
ZACKMAN
  • MECHANIC
  • 4,202 POSTS
The only other explanation for not shifting is the transmission internal:


https://www.2carpros.com/forum/automotive_pictures/55316_024runner2ndgear_1.jpg

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Monday, May 11th, 2009 AT 9:54 PM

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