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1979 Pontiac Firebird Barely Moves

Abel

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Sep 15, 2021
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I have a problem with my 1979 Pontiac firebird.

It works fine in reverse park and natural as it should, but drive-in barely moves no matter how much it revs.

It's automatic.

I thought it was the governor as it seemed stuck but fixed that, replaced the vacuum modulator, new transmission filter, and fluid.

Not sure if it's a transmission problem because I didn't notice any slipping before.

No burning smell that I can find.

I'm not sure what the problem is.

Any help or speculation or help would be appreciated!