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Questions and Answers

Mercury Grand Marquis Misses

Q. 1994 Mercury Grand Marquis misses, stumbles, backfires when cold. After about two miles it starts to run just fine. Replaced the ECT near the thermostat. That did not help. The car has a 4.6 liter V-8, 106,000 miles.

Thank You,
J.K.

Mercury Grand Marquis Misses

A. Are you sure you replaced the right one? There are two, one for the PCM and one for the temperature gauge.

Mercury Grand Marquis Misses

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