A/C Blower problem
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Freshman User
Joined: Jul 2002
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From: Little Rock
A/C Blower problem
My A/C blower on my 96 full size Bronco starts blowing our the normal AC vents and then shifts to the defrost vents and then shifts to the floor vents. Does all of this randomly. What do you think is causing this?
Last edited by RVBfordman; Aug 4, 2004 at 10:46 AM. Reason: Forgot year model
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Freshman User
Joined: Jul 2002
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From: Little Rock
It may be related. I noticed that the times that I had the biggest problems was when I was pulling a trailer with a medium size load on the trailer, which means I was having to provide more throttle to keep the speed up. What do you think is causing it, if it is related to the throttle?
Lead Driver
Joined: Jun 2004
Posts: 6,334
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From: Amarillo, TEXAS!
Probably a vacuum leak or bad check valve in the vacuum system. The more throttle you apply, the lower the vacuum goes. If there is a bad check valve, or leak it could produce the symptoms you describe.
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Freshman User
Joined: Jul 2002
Posts: 28
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From: Little Rock
Thanks, I'll give it a look see. I hadn't thought about the throttle issue until you asked it and it has occurred when the truck has been pulling a trailer.
Where is check valve located?
Where is check valve located?
