1996 Mercury Marquis

Transmission problem
1996 Mercury Marquis V8 Two Wheel Drive Automatic 96000 miles

Can a sticking pressure control solenoid cause a powertrain control module to fail?
November 2, 2010.

My Ford dealer replaced the PowerTrain Control Module (PCM) in January 2010. In October the transmission began to malfunction. The tranny shop found a code saying that the pressure control solenoid had malfunctioned. They reset the code and the tranny worked fine. It reverted to tranny problems and threw the same code. I took it to the Ford dealer and they said that the PCM had failed and there was a sticking solenoid in the transmission. I asked that they replace only the PCM because resetting the code allowed for a functional transmission. They then stated that there was a short in the pressure control solenoid that ruined the PCM and they would not warrant the new PCM unless the PCS was replaced. I had both the PCM and the PCS replaced. I questioned their conclusions and they gave me this explanation, " The Pressure Control Solenoid stuck and reached RPM limit and caused internal damage to the PCM". I don't buy that. Is what they say true?

Nov 2, 2010.