Hello All:
I have a '91 Loyale that the heater blend door sticks in the vent position. Sometimes after running for a while and generally above 2000 rpm, it will switch to heater or defrost with appropriate button selected. I can hear a vacuum leak somewhere but was wondering if anyone knows where the vacuum lines are and what I would need to disassemble to get to them. I can't find any diagrams or component locations in the database I have access to.
Thanks