Engine started running rough (2 weeks prior to trans problem), trans shifts a little eratic at onset of engine running rough. fluid level good, fluid clean and not burnt. Transmission now has no forward or reverse (quit working in gear in drive, no prior warning). Please Help
Since the engine was running rough, I'd first suspect the torque converter, rather than the transmission. When in park, does the engine run smoothly? Do you get any clicking or other noise when you select drive or reverse? If there's no action at all, either the torque converter has failed, or the trans primary pump (the one that causes the clutches to select) has given up.
Whatever the cause, the trans likely has to come off the engine to be inspected, and to get at the torque converter.
First step is to get it evaluated by a professional. Don't take an immediate "the tran$mi$$ion has to be rebuilt" as the diagnosis. Ask questions. A reputable shop will know how to evaluate the torque converter without taking it all out.
Be aware that it may well be significantly cheaper to buy another running and shifting 93 than to fix yours.
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