April 25, 201213 yr While replacing vacuum lines this afternoon, I noticed that the vacuum line from "Vacuum Switch I*" had a tee in it, with one end of the tee going to the normal spot (manifold vacuum), but the other end of the tee went to a bit of a nipple on the firewall. When I pulled the hose for that section (tee to firewall), there was a touch of motor oil in the line (just that section though, none in the longer section, ie. manifold to vacuum switch). I don't see any tee for that vacuum line in the schematic in the FSM, so I left it disconnected (ie. I just ran the new line directly from the manifold to the switch, leaving out the tee and the section going to the nipple on the firewall). Question is, does anyone else have a tee in that vacuum line? Also, any ideas what needs manifold vaccum on the other side of the firewall (heating/AC controls? But what about the oil I saw?) * ie. the vacuum switch in the upper left side of the engine bay, closest to you when you are at the nose of the car facing the windshield). I can post photos if you need visual details. Edited April 25, 201213 yr by skingry
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