car dying-think its transmission related

[silkyslim]

I have a 1994 Buick Century automatic, 75k miles. Whenever I go over 50mph recently, then brake back down approaching 0, my car starts shaking and dies. It restarts after a couple moments. What could the problem be?

 

[bison]

TCC hydraulic circuitry staying activated. Its like a manual transmission with the clutch engaged. Probably needs a minute or 2 to bleed down then it releases. I have a 97 Park Ave that did this to me once then it never happened again so i didnt investigate further. Im not sure exactly where to start. Could be a valvebody issue or just a TCC solenoid issue. Sometimes the pressure control solenoid acts up and causes some weird symptoms in those. Maybe Chris will chime in with more info on this one.

 

[terryjh6]

no ,, i'm not Chris, but sounds like the lockup t/c is not unlocking.. sounds like a bad tcc to me,, but just my o2

 

[terryjh6]

oh also check for a bad brake light switch on the brake pedal, it cuts the lock up converter when you hit the brakes..

 

[bison]

The hydraulics in the trans dont allow for the TCC to function in 1st. So an exhaust could be plugged in the hydraulic circuit preventing the unlocking.