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Old 05-07-2012, 10:43 AM   #1
cvanloon
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Join Date: Dec 2010
Posts: 25

2001 SL2
Default What is this

I wasn't sure what this component was under my hood. (red arrow pointing to it in figure)

It is humming when I turn my car both on and off but it eventually stops.

Thanks a bunch... -Chris
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2001 Saturn sl2

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Old 05-07-2012, 11:20 AM   #2
blue92
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Posts: 1,164
 

1992 SL1
1998 SC2
Default Re: What is this

It is an air pump, used to pump air into your exhaust. It is for pollution control.

...
92 SL1 original owner
94 SL2 Homecoming
98 SC2 White Hot
02 SC2

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