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Old 02-06-2005, 09:18 AM
Brian Carlton Brian Carlton is offline
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Join Date: May 2002
Location: Blue Point, NY
Posts: 25,396
Quote:
Originally Posted by Dervman
OK, now I'm really confused
If the Black line is the source of clean cabin air for the vacuum pump, wouldn't disconnecting it as you suggest cut off that air supply?
Am I reading this wrong?
Nope, your are correct. But, that large black vacuum line is the vent line for the EGR system only (and possibly the ARV if you have it). There are other vents that lead into the cabin for other devices. If you look on the side of the vacuum control valve for the transmission (on the IP), there is another black vent line that leads into the cabin. Most every vacuum device needs some sort of vent line.

Just check it out on your vehicle first. The '86 doesn't use that large vacuum line to vent anything else (nothing is teed into it). If anything tees into the large line between the beginning point behind the right headlight and the point at which it heads into the cabin, then, you must keep the remaining portion (from the tee and into the cabin).
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