OK...
I just got my master cylinder replaced and now this.

My radio changes stations by itself. I'm thinking it is the button on the steeringwheel going haywire.

But most importantly...

I'm driving the mountains in Colorado. I am going up hill after running for a half hour or so. My car seemed to buck if you will. The rpm'* jumped back and forth from 2000 to 2400. The needle bounced and you could feel the car doing this. Right away I thought my transmission was shot and it was slipping. I shifted into D and the symptoms remained. At the top of the mountain I shifted into neutral. My car died. I tried to restart and got no sound at all. So I get out and look under the hood assuming my engine or transmission are burnt to peices.

With my head under the hood I hear a distinct clicking noise. It seemed to be coming from the vapor canister charcoal dealy in the right front corner of the engine compartment. So I disconnected the wire that plugs into the purge solenoid on top of the canister. The clicking stopped immediately. I then tried to start the car and it did turn over but didn't start. I only tried once. So I went back and plugged in the solenoid again and the car started fine and ran like a champ all the way home. A few short trips and everything is fine.

Does this make any sense? Could the solenoid or the canister cause the engine to jump, surge, or whatever you wish to call it? Should I replace it?

1992 Pontiac Bonneville

Send a PM to Willren in here he seems to be able to diagnose these problems easily. I'll send a link to this topic to him and ask him to help ya out. I have a 99 SE and just had the tranny rebuilt for $1,425! Hope it'* not too serious!

Melissa, don't do that......Everything technical wise needs to be posted publicly for others that maybe experiencing the same problems.

Anyways, how how in elevation were you when the problems started?

Okie Dokie good plan! He'll find this topic now that we typed in it and brought it back to the top of the list!

Okay, 50 pm'* a day is enough, when all I can ever do is tell people to post the problem. Don't EVER PM someone for technical advice on this forum. This applies to every member. POST your problem for others to be able to help you.

I saw this topic earlier, but I'm very busy trying to cook a meal, and I have sick people in the house, so I chose not to go into depth at the time.

Disconnect the steering wheel connector on the back of the stereo. It'* the one off to the side by itself. Does the problem go away?

Your torque converter is trying to engage, but can't hold. Check your trans fluid for color and level. Consider getting it scanned.

The clicking is normal operation. Ignore it. Do not disconnect it or your car will blow up. You're lucky to be alive. We had 4 members of this forum die just yesterday from disconnecting a vapor recovery purge solonoid. (joking on the blowing up part, it is normal to click).

Further information on the TCC unlock surging issue is needed. Was the cruise engaged? If so, it may be normal operation depending on the incline. If the load on the engine is too high (cruise or your foot ask too much and the TPS senses a change in voltage beyond it'* normal point), the TCC will disengage by design.