rough idle

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Happens every day.Stopped at traffic light,seems thst it wants to stall,but doesn't.Driving about 40 45 mph it sort of jerks and goes away.I har it tested diagnostic circut Check engine light.Engine light came on periodiclly and went off.They said everything was working alright.I forgot to ask if they road tested. Thank you, Don hochberg

Visitor

in Scottsdale AZ

May 18, 2010

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What are the best Mercury repair shops?

RepairPal Certified shops can diagnose and repair your 2003 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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rough idle

What is your question?

Visitor

in Scottsdale AZ

May 18, 2010

2 Replies

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Visitoron May 18, 2010

How many miles. A tune up is recommended at 100,000

Visitoron Nov 24, 2010

On mine it turned out to be a bad "Idle Air Control Valve". Very easy to fix yourself and the part costs only $50-$70. Details on how to do this repair are already posted on the web so I won't repeat them here. Hope this helps.

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Popular Answer

What are the best Mercury repair shops?

RepairPal Certified shops can diagnose and repair your 2003 Mercury Grand Marquis. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.