My 2000 Mercury Grand Marquis won't accelerate pass 40mph. Diagnosis check reveals nothing wrong with the major functions of the engine. C foam was my best guess. Then the wheel speed sensor. Thanks!
Asked by Alex Orlando Corneli... Jul 29, 2015 at 03:36 PM about the 2000 Mercury Grand Marquis LS
Question type: Maintenance & Repair
4 Answers
how much fuel volume / pressure is at the intake at idle and cruse?
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Alex Orlando Corneli... answered 9 years ago
Would love to answer but I don't know accept I idle the car with engine running a lot.
Possible clogged catalytic converter. Have someone check the converter and the exhaust system.