1994 Bonneville SSEi, new transmission--failed
1994 Bonneville SSEi, new transmission about 3 months ago. Then things started going wrong. First, the car would drive for a mile or so then lose all gears, i.e., the engine would rev but the car wouldn't move. First time, the trans rebuilder said it was the PRNDL switch (neutral safety switch, which was throwing a code).
When that didn't fix it, he said the it was the torque convertor and replaced it under warranty. He also replaced the radiator (not under warranty) and said that the built-in factory trans cooler was leaking and damaged the transmission. OK, so it had over 160,000 miles on the radiator so it probably needed replacement anyway. It has run cooler since then, so I accepted that.
Then the car stopped engaging the transmission when you first started it. You had to let it idle for a couple of minutes before it would go. After that it would go just fine, shifted good, etc., but if it sat for more than an hour it would do it again. But at least once it got going it kept going... The transmission rebuilder determined that there was a vacuum leak. A free fix of what he said was the leak seemed to fix the problem.
Now the first problem has returned.. sorta. Symptoms: When first starting the car, it engaged the trans just fine and away you went, shifting normally. Suddenly it would lose transmission engagement, i.e., the engine would rev freely and you don't continue to move forward. After drifting to a halt, if you put the car in park, kill the engine, then restart (I mean you can restart immediately, or wait a few minutes. There doesn't seem to be a cooldown requirement), the trans re-engaged--no slippage--and off you go again. To a repeat performance. I drove the car 7 miles that way last night after my son called me at 11:30 to report he was stalled on the side of the road... The transmission engaged fine, then it didn't. Stop, park, kill, start, go. Worked all the way home.
Next morning: Started the car, put it in gear. Nothing. Not the slightest engagement forward or reverse. AAAAAARRRRGGGGHHH!
Oh, yeah--one more thing. If you turn the engine off in neutral and try to restart, it will not start. That'* odd. Used to start in neutral.
What can be going on here?
Last edited by KeithH; 10-30-2008 at 11:25 AM.