Last night after I had been driving for about 10 miles I shifted into reverse, only to find that it would not engage. It behaved as though it was in neutral, and made no unusual noises. The transmission operated correctly in any of the forward gears. This morning, after a cold soak (about 20 degrees overnight) I started the car and found that it would go into reverse, but slipped excessively. And after running for a short time in the driveway, it behaved as last night, with very little signs of engaging. And, again, no unusual noises. Prior to yesterday, reverse had operated flawlessly.

Trying to diagnose the problem, and to determine what checks I can make prior to consider removal of the transmission. Would appreciate advice, and if there are any good manuals readily available.

Fluid level looks good, and the fluid also looks clean.


Thanks in advance,
Joel