I have the same problem with my 1991 Century. As long as your driving along it is smooth as glass. But when slowing down to a stop the engine starts running rough, sometimes dies. I have had it checked at a dealer service center and an independent and one can figure it out. Heres what I have done so far. Changed ECM, CPS, plugs, wires, coil packs, fuel pump, and MAF. When someone figures this out I'd like to know! I have also unplugged the lock up solenoid to no effect.
Tuesday, October 11th, 2011 AT 10:20 PM