Transmission not shifting properly

1991 PLYMOUTH ACCLAIM
98,000 MILES • 3.0L • 6 CYL • 2WD • AUTOMATIC
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GORDON3053
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  • 2 POSTS
Hello,

My transmission (in drive) does shift through the lower gears, but car jerks (usually) through each one and usually not ending in the final gear. I will then drive at about 35 MPH (or less) at 2,500 to 3,000 RPM's, never shifts again.
I will stop, turn off car, then start up again, basically, then the same thing.

Transmission fluid level is okay, not old and mechanic doesn't have OBD1 scanner.

While looking for a scanner, thought to ask you for help and any comments.

Thank you,
Nov 20, 2020 at 9:10 AM
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ASEMASTER6371
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  • 52,796 POSTS
Good afternoon,

You can see the codes if you turn the key to the on position and turn it off 3 times. The last time leave the key in the on position. It will flash out codes starting with 11 or 2 flashes slow with a pause in between.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Try this and see what codes you find.

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

Roy
Nov 20, 2020 at 1:13 PM
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GORDON3053
  • MEMBER
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Hello Roy,

Thanking you again.
Not sure my first response e-mail went through; sending again.
Thank you very, very much for the quick response.
Sounds good, great to me.

Nov 20, 2020 at 2:58 PM
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ASEMASTER6371
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You are welcome.

Keep us updated.

Let us know if you have any other questions.

Roy
Nov 20, 2020 at 3:02 PM