1997 Mercury Grand Marquis quits every time I come to a stop light or stop sign
It will start again after it quits but have to turn it off and start up again, real problem in
Could be a vacuum leak in the vacuum assist braking diaphragm (if you have one) Start the car up and press the brake pedal ... if the car dies then look for a vacuum leak
Sounds like a bad IAC (Idle Air Control) valve or dirty throttle plates. HTH. -Jim
Besides the above IAC and throttle, clean your MAF sensor.
Looking for a Used Grand Marquis in your area?
CarGurus has 1,734 nationwide Grand Marquis listings starting at $1,950.
Search Mercury Grand Marquis Questions
Mercury Grand Marquis Experts