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Anyone know why????

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Old Jun 10, 2009 | 10:06 PM
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Default Anyone know why????

I can drive my car down the highway and it be smooth as silk. Then when I hit the ac I get a rough sound and vibration feeling.... Turn it off its gone smooth again...
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Old Jun 10, 2009 | 10:10 PM
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Just a guess, compressor pulley bearing is shot and causes the serpentine belt to vibrate.
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Old Jun 10, 2009 | 10:16 PM
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Nother guess. Puts a load on the engine and you have a broken motor mount? SWAG (Swinging Wild Azzed Guess)
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Old Jun 10, 2009 | 10:42 PM
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Can you try it in the driveway standing still? Have somebody tach it up to 2000 or something then flip on the AC, while you watch with the hood up. It's worth a try, costs nothing, and maybe you'll see or hear what the problem is.
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