NO FORWARD   -  Serious transmission failure in almost all cases


NO UPSHIFT -  Less serious, as in vacuum

related, throttle cable or governor.


NOISE IN LOWER GEARS  -  Difficult diagnosis, can be anything from gears to a bad transmission mount

(insulator) .


HARD SHIFTING  - Usually less serious, in nature such as vacuum or throttle adjustment.


SOFT SHIFTING  -  Late and soft shifting  is not a good thing. Early signs of soft or slipping shifts become normal when adjusted upward.


NOISE IN UPPER GEARS  -  Very hard to diagnose, usually outside of the transmission itself.




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Troubleshooting Automatic Transmissions