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Transmission not shifting properly when cold

Tiny
ANIEKAN
  • MEMBER
  • 2003 TOYOTA COROLLA
  • 1.8L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 150,000 MILES
The transmission shifts properly when cold engine when the car is moved first time in the morning. After running for about three minutes the transmission drags before shifting. I changed the body valve of the gear, but the problem persists.
Thursday, October 7th, 2021 AT 4:45 AM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
Hi,

When you indicate it drags, do you mean it has a delayed shift? Is there any slipping or rough shifts? Also, I need to clarify what you mean by valve body of the gear. Are you referring to the valve body itself?

Also, have you checked for diagnostic trouble codes that could be related? If you haven't, you may want to consider doing that. Here is a quick video showing how it's done.

https://youtu.be/b2IJGfImVvw

Let me know as much as you can.

Take care,

Joe
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Thursday, October 7th, 2021 AT 7:27 PM

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