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valve? in vacuum line to cc

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Old 02-02-2009, 06:15 PM
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valve? in vacuum line to cc

What is the purpose of the small line that comes out of this valve, and where does it go, after it goes through the firewall? It's in the vacuum line to the cruise control.


Also, what is the large aluminum object, cylinder shaped, maybe 5" long x 1.5" in diameter, under the wiper motor?
Attached Thumbnails valve? in vacuum line to cc-vacuum.jpg  

Last edited by gregsz-28; 02-02-2009 at 06:19 PM.
Old 02-02-2009, 10:35 PM
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Re: valve? in vacuum line to cc

I believe it's a check valve for your HVAC system. It keeps it from switching to defrost when the vacuum goes low.
Old 02-03-2009, 01:05 AM
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Re: valve? in vacuum line to cc

Thanks for the answer!
That seems logical... one check valve probably used for both CC and HVAC, since there is a vacuum resevoir on the same side of the valve as the hoses that go to CC and under my dash.

Now, about my second question...
Old 02-03-2009, 04:27 AM
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Re: valve? in vacuum line to cc

The wiper motor.
Old 02-03-2009, 09:54 AM
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Re: valve? in vacuum line to cc

Oh... I thought that what was above it was the wiper motor. Shows how much I know.
Thanks!

Also, what is the larger vacuum line (approx. .5" OD) that goes from the CC, through the firewall, on the drivers side, for?

Does it go to the brake pedal?

Last edited by gregsz-28; 02-03-2009 at 06:44 PM.
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