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2011 Mercury Grand Marquis Questions

Get answers to questions about your 2011 Mercury Grand Marquis at RepairPal. Find solutions, diagnose problems and get back on the road.

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3
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Air works fine, when I want to make it warmer by raising the
Temperature it plows cold air

Ford dealer has replaced coils on 5,6&7 and eliminated fuel injectors. My past experience from the old days says the timing is off. The Ford analyzer says within specs. How can you determine timing issues?