A904 has reverse no foward

Phreakish said

And one drive home without it will fry your trans. That's probably what happened, especially if you had a decent amount of clutch material in the pan.

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Yep. Don't take much. When I was a kid 904's got a bad reputation of being junk and I bet a lot of the time it was because the throttle pressure linkage was either missing or out of adjustment.