Automatic transmission stuck in third or fourth gear?

1998 FORD RANGER
300,000 MILES • 4.0L • V6 • 2WD • AUTOMATIC
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BANDIT216
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When taking off truck has little power, but if baby the throttle truck will perk up after 15 MPH. Truck will run at 65 MPG, but RPMs are at 3,100.

The transmission will not shift from 15 to 65 MPH. No codes on dash. I replaced the speed sensor and that did not fix.

Any ideas?

Jason
Aug 2, 2021 at 5:00 PM
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ASEMASTER6371
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Good morning,

This sounds like you have a seized clutch pack in the transmission that gives you constant one gear all the time.

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

I would change the fluid and filter and look for any debris in the pan.

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

It is not electronic because if it were, it would code. It sounds like you will be either rebuilding it or replacing the transmission.

Roy
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Aug 3, 2021 at 4:55 AM