bigshow1122
Registered
Here we go with the first authentic post for a question. I have a 93 Mark VIII and that is only putting heat to the defrost. I have been told that this is a safety precaution when something else isn't working right. No matter what button I hit on the ECM it always comes out of the dash....Have any ideas? I am assuming it might be a vacuum leak? Do you guys know of any tips or (first thoughts) that I would check before really getting down and dirty with this scavenger hunt?