Normally when there is a vacuum leak, the vent go to defrost. Check under the dash on the heater plenum for vacuum operated servo motors, try moving those by hand, when you get the right one,
Defrost will operate. Then see if there is vacuum in that line, if yes, replace servo, if no, either trace to find leak, or disconnect it and move the lever to defrost.
Thursday, November 29th, 2007 AT 12:39 PM