LEXUS ES300 SHIFTING ISSUE

  • Tiny
  • sledboy2k
  • 1992 Lexus ES 300
  • 6 CYL
  • FWD
  • automatic
  • 198,000 miles

Friday, while going camping for the 4th, I proceeded up a hill, had my car downshift out of overdrive (pulls about 3200 at 60mph). I proceeded up the hill maintaining a constant speed when the car started to slow down like it was losing power and then it upshifted into overdrive. I kicked down on the gas pedal and it downshifted harshly out of overdrive again. Never had a problem with the transmission and we continued driving all weekend (200miles) to camp and around. Coming back up the hill from the other side, I turned the OD off button on to see if that would keep it from upshifting. I was pulling the hill, about 60mph again and after a couple miles (very long hill), it felt like it was losing power and then upshifted again. I kept pushing the OD off button but it wouldn't shift out of OD until I hammered the pedal again and it shifted pretty harshly. I'm thinking maybe a shift selenoid, is there anything else that may cause this. Thanks

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Monday, July 4th, 2011 AT 4:02 AM

3 Replies

  • Tiny
  • mhpautos
  • Expert
  • 30,561 posts

I would first have a transmission scan done, this will show up any solenoid issue and may spread some light on what is going on, do this and report any codes extracted.

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Monday, July 4th, 2011 AT 5:15 AM
  • Tiny
  • sledboy2k
  • Member

Transmission scan showed nothing. Dropped the fluid, it looked ok

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Monday, July 4th, 2011 AT 11:01 PM
  • Tiny
  • mhpautos
  • Expert
  • 30,561 posts

You will have to get a trans shop to do a line pressure test and checxk the shift pressures as well.

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Tuesday, July 5th, 2011 AT 2:49 AM

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