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When transmission is shifted into first gear the vehicle moves slowly

Tiny
HARD HEAD
  • MEMBER
  • 2006 FORD EXPEDITION
  • 5.4L
  • V8
  • 2WD
  • AUTOMATIC
  • 102,399 MILES
The vehicle listed above with original transmission no oil change, level is good, no codes. Problem is: Put on Drive press the gas first gear start moving very slowly stay the same even if you press more the pedal it takes time to change gear. Second gear normal operation, third gear normal operation, reverse is normal operation.
What could be the problem?
Please help.
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Monday, June 21st, 2021 AT 9:56 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,397 POSTS
This happens when the fluid pressure sensor goes out you should change the fluid as well. here are guides and diagrams below to show you how to make the repair:

https://www.2carpros.com/articles/how-to-service-an-automatic-transmission

and

https://www.2carpros.com/articles/automatic-transmission-problems

Check out the diagrams (below). Let us know what happens and please upload pictures or videos of the problem.
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Tuesday, June 22nd, 2021 AT 10:19 AM

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