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loud pump, winding noise from front passenger side Engine bay?

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Old 02-08-2002, 09:03 AM
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Default loud pump, winding noise from front passenger side Engine bay?
Sounds like some kind of pump is broken, just want to know what can it be. Only happens as I drive. Winding sound is more like an old sharpener .I tried sitting at idle and reving it up but sound does'nt occur.
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Old 02-08-2002, 09:21 AM
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Alternator or A/C compressor, possibly
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Old 02-08-2002, 09:25 AM
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Default Yeah, I hear the pumping noise only when I first start up my car. Then it goes away. no winding
noise though. Wonder what that is also.
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Old 02-08-2002, 10:22 AM
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Aux air pump. It pumps air across the exhaust valves to aid emissions until the engine warms up
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Old 02-08-2002, 12:19 PM
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Thanks, now I know...and knowing is half the battle! :-)
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