Question about 2000 Mercury Grand Marquis

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Motor has rough idle and loss of power - 2000 Mercury Grand Marquis

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I have a grand Marquis and I experience the same problem. If your check engine light is on I can assume your problem is there is dust in the air intake. When I ever experience the problem I take the air filter out and blow out the chamber, or vacum it out with a shop vac. If your check engine is on disconnect the battery for 5 minutes and reconnect. Then drive it. That should fix it.

Posted on Oct 10, 2009

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