When accelerating transmission locks down in first gear

2001 FORD MUSTANG
150,000 MILES • 3.8L • V6 • 2WD • AUTOMATIC
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DHBOBCAT
  • MEMBER
  • 1 POST
start going, and when it shifts it locks down in 1st.
Jun 1, 2020 at 5:22 PM
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ASEMASTER6371
  • ASE Certified Mechanic
  • 52,796 POSTS
  • ASE Certified Mechanic
Good morning,

What do you mean it locks down in first gear? Do you mean it will not up-shift?

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

How long since you had the fluid and filter changed?

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

Is the check engine light on? The throttle position sensor is a primary sensor for shifting times for the transmission.

Roy

Jun 2, 2020 at 4:14 AM
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