View Full Version : vacuum diagrams?

03-09-2011, 11:58 AM
I am new to the forum and have a 1986 SVO.I have a vacuum leak that changes the a/c and vent settings from vent to defrost under throttle.:confused:Does anyone have a vacuum diagram for the 1986 SVO with a/c.

03-09-2011, 03:15 PM
I have a NEW EVTM (Electrical/Vacuum Trobleshooting Manual) for 1985 Mustangs, SVO included. Some minor changes in electrical stuff between 1985 and 1986 but the vacuum charts are identical. You cna get the 1895 EVTM here for about $30/US:


I didn't see any for 1986 - might have missed it - so be sure to check.

03-10-2011, 09:36 AM
change this part. You can get it in the HELP section at your local parts place.