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Old 10-28-2000, 05:44 PM
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Join Date: Aug 2000
Posts: 106
On my 83 CD I have a open black vacuum line under left dash, the other end goes into a Y at the vac. box on the I.P. I have been told this line is a vent but it "vents" a lot.
It produces vacuum in relation to rpm just like a tach. Is this supposed to be open? I have pluged it and not noticed any change.
Jerry B
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Old 10-28-2000, 07:39 PM
MikeTangas's Avatar
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Join Date: Apr 2000
Location: So. Cal
Posts: 4,430
I believe the black vacuum line under the dash is supposed to be unplugged. It is a vent, and since it does have vacuum to it, it is inside the cabin to pull in fresh, uncontaminated air.

Mike Tangas
73 280 SEL 4.5
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