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1995 Toyota 4Runner Weird tranny problem

Tiny
KCREW74
  • MEMBER
  • 1995 TOYOTA 4RUNNER
Transmission problem
1995 Toyota 4Runner 6 cyl Four Wheel Drive Automatic 75k miles

Hello,

After experiencing some slipping and eventualy failure (truck would'nt drive in any gear) I changed the filter and fluid on my 4runners automatic tranny. The pan was pretty clean; no metal fragments just a thin layer of sludge in a couple spots. I did'nt do a complete flush just emptied the pan a couple of times and replaced with new fluid. Since doing that service the car moves, but if you come upon any hill (in Drive) it loses power and it feels and sounds like the engine is lugging. Moving the shift lever to 2nd is even worse---bad engine lugging and zero power. I have to shift down to Low to get up any hill and I live with alot of hills. Low seems to be acting normaly. Does that sound mechanical (bands?) Or electrical (solenoids?)---I know these cars have had solenoid issues.

Appreciate any help,

Hoping its not bands.
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Thursday, March 5th, 2009 AT 10:37 AM

3 Replies

Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
Read the codes and post the results.


https://www.2carpros.com/forum/automotive_pictures/62217_95AndOlder2_6.jpg



https://www.2carpros.com/forum/automotive_pictures/62217_95AndOlder3_7.jpg

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Thursday, March 5th, 2009 AT 5:43 PM
Tiny
KCREW74
  • MEMBER
  • 2 POSTS
The code that I pulled was 52----knock sensor/ECM.

Anything to do with tranny?
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Friday, March 13th, 2009 AT 9:53 AM
Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
Weel if the knock sensor is retarding your timing, which can be the case, it will affect shift patterns. I show 52 as just the knock sensor, make sure it's plugged in if it is, replace it.
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Friday, March 13th, 2009 AT 12:30 PM

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