2002 Jeep Liberty Car shaking and problem with gear shift.

2002 JEEP LIBERTY
34,426 MILES • 6 CYL • 4WD • AUTOMATIC
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JOYALAN
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hi i have a jeep liberty with 34000 miles on it, when ever i change the gear shift the car shakes. and when ever i am going at highway speed the car starts to vibrate and shake as well.
Jul 7, 2010 at 12:20 PM
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STRAILER
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Hello, It’s sounds like you have a engine misfire. Please remove all spark plugs to check condition. I know the miles are low, but if a spark plug becomes cracked or fouled it can cause the problem you describe. Please let us know what you find.
Jul 12, 2010 at 5:18 PM