92 Bonneville problem

I forgot to say that the car works OK when cold. Once the engine warms up the problem starts.

It sounds like the TCC solenoid has gone bad. Look at either end of the engine (I believe it's on the drivers side though) and there's a pig tail that plugs into the tranny housing. If you unplug it and it doesn't stall then its the solenoid.

Is the TCC solenoid dificult to replace? Is it expensive to have it replaced?

The TCC for my 89 Z-24 was easy to replace. I don't remember what the TCC cost was. Less than $50 from the dealer.

On my Z, it went in throught the top left of the trans case on the driverside. ( 2.8 V6 ).

========= Harryface =========

1991 Pontiac Bonneville LE 3800 V6 ( C ), Black/Slate Grey _~_~_~299, 179 miles_~_~_

~_~_~_~_U.S.A._~_~_~_~_~_

~~~The Former Fleet ~~~

89 Cavalier Z 24 convertible 78 Holiday 88 coupe 68 LeSabre convertible 73 Impala sedan

I unplugged the plug into the transmission housing and the problem is the same. Today I tried the car myself, I started the engine, drove in the Park-in-lot for about 3 minutes, then it started to hesitate and a minute or two later it stalled and wouldn't start. After a couple of minutes later it started again but still rough and quickly stalling. I started it again, accelerated the engine a little and it kept running. when I was doing this I heard a relay clicking a few times somewhere to the right under the dashboard. The engine wasn't stalling and I put the car in drive. As I accelerated to start going, it appeared as if I was breaking at the same time and the car would move slow as if it was pulling a big load or as if the transmission was slipping but the RPMs were only about 2000 or a little over. It seems that when the engine gets warm the transmission gets sluggish or as if in a high gear. Is this indicative of a bad TCC solenoid? This happens with or without the plug plugged into the transmission.

That doesn't seem like a bad TCC solenoid, but I'll think around and throw out any ideas that I have.

I have good news (for myself). The Bonneville is working fine. I took it to an AAMCO shop and they said it was the transmission and it had to be rebuilt or replaced, it was not just the TCC Solenoid, and they did drive it around the block. Then I went to another transmission shop, kind of a family shop, I didn't take the car because I didn't want to force it anymore, I just described what the car was doing (more or less like what you see below from my other message) and the guy told me to check the computer. So, I went to a junk yard and got a used one, $75.00, and replaced it. The car is working fine now. I drove it for about 45 minutes and no problem. I don't have much doubt that it is OK, I will see in the next few weeks.

I did put back the old computer and it does have a problem. Now, I think this is important, in my experiments I discovered that if the battery in the car is low, the problem is much severe. When I put a battery that I charged during the night, the car did hesitate etc. but the transmission didn't feel like dragging a heavy load.

I hope this helps anyone that may enconter the same type of problem in the future.