wierd lockup/sometimes unlock

[CaPPY]

I tried different chips...same results.

No leaks from tranny or converter.

What's happening: I can drive around town starting out and the converter will lock normally.

I was on the interstate and after a while I noticed that the converter would not unlock, not even if I tapped the brake. Coming off the highway the car almost killed, lousey downshifts...still locked.

I got back up to about 50 mph and got off the road again and the converter went back to locking and unlocking normally in city driving. I could even tap the brake and it would unlock. I even used my lock up switch going uphill and it would lock up in 2nd.

Does my speed (highway) have something to do with the lockup?

A friend mentioned the VSS might have something to do with it!

Could it be something as simple as a Brake Switch getting old?

Since it's (intermittant), is there any way to test for the problem without just replacing parts.

I've pulled the kick panel a couple of times in the past week and still can't find any loose connections???

 

[MeanBuicks]

Your plaqued with the infamous sticky TCC solenoid.

It happens to all of these 200-4R solenoids as they age. I even replaced one on an 8000 mile GNX that was sticking. Install a new one and your problem will be solved.

 

[CaPPY]

Thanks! I'll order one today!