vent cutting out
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New User
Joined: Jun 2003
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vent cutting out
I have a 93 f150 and it seems as if when i go up hill the a/c vents start running out the defrost vents and this stops when I turn back down hill. Any sugestions to why this happens or how I can fix it?
Senior User
Joined: Apr 2000
Posts: 188
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From: Latrobe USA
vent cutting out
The vacuum is dropping when you climb a hill and that is causing the defrosters to start to come on.
Check for a vacuum leak in the lines that feed the contols.
there are a few plastic ones by the heater core box that deteriorate.
Check for a vacuum leak in the lines that feed the contols.
there are a few plastic ones by the heater core box that deteriorate.
