Question about 1988 Lincoln Town Car
88 towncar 73000 miles when i hit about 40mph i start getting hot air coming from the vents when i let off pedal it goes away also when i have ac on when i step on gas cold air stops coming from vents i know it vacum but the whole car has so many vacum lines last thing is my parking break release valve is hissing its under the dash looks like a half shaped moon could the be causing the whole vacum in the car the screw up?
If you hear a hissing sound and its comming from a valve or a hose you have a vaccum leak. And yes this could cause your heat to mess up. it all works off vaccum weather you control the knobs or not. When the vuccum increases or decreases. it will move the blend door to difernt positions.
Posted on Dec 29, 2009
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Posted on Jan 02, 2017
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