When my car is sitting still after a while, it will isle up and then isle down,

What is your question?

Does anyone know what causes this

Jul 23, 2016

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What are the best Mercury repair shops?

RepairPal Certified shops can diagnose and repair your 2008 Mercury Grand Marquis. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.

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What is your question?

Popular Answer

When my car is sitting still after a while, it will isle up and then isle down,

What is your question?

Does anyone know what causes this

Leeskee in Little Rock AR

Jul 23, 2016

1 Reply

Popular Answer

CantrellServiceCenteron Oct 14, 2016

May have a vacuum leak. Possible Idle Air Control Valve or carbon build-up issue. The intake manifold on those is common to require replacement for vacuum leaks/cracks.

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Popular Answer

What are the best Mercury repair shops?

RepairPal Certified shops can diagnose and repair your 2008 Mercury Grand Marquis. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.