2004 Mercury Mountaineer

2004 MERCURY MOUNTAINEER
53,000 MILES • 6 CYL • AWD • AUTOMATIC
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KMOE21
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Hi there, My 2004 mountaineer has 53000 miles on it. It has developed a shake vibration at idle.. I have changed spark plugs ,air filter,fuel filter. check the plug wires(all have spark going to the plug). There is no check engine light on. It shakes very bad at idle. the rpms jerk up and down at idle its almost like its choking. i have put injector cleaner in along with high octane gas. I am stumped.
May 20, 2008 at 8:29 PM
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MHPAUTOS
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Hi there,

i would be checking for a faulty injector and if they are ok do a comp test to make sure you don't have a valve issue.

Mark (mhpautos)
May 21, 2008 at 12:17 AM