A/C and Heater problems
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Joined: Feb 2011
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A/C and Heater problems
May A/C intermittently switches from vent to defrost. My heat does not work at all. Everything that I have checked so far is getting vacuum. Is it my controls???
Thanks in advance
Thanks in advance
Post Fiend
Joined: Feb 2011
Posts: 26,410
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From: Ft. Lauderdale, FL
If I'm understanding right, a/c blows ALL THE TIME, it just stops blowing from vent and starts blowing at windshield and back to vents again.
If so, i still think it a vacuum problem.
Senior User
Joined: Apr 2009
Posts: 194
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From: South Carolina
Heater by-pass valve
When mine did this I replaced the heater by pass valve under the hood on the passenger side. This valve prevents heat when the AC is on. When it does not work properly you get no heat. Mine would stick and occasionally release itself under acceleration. It is vacuum driven.
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Joined: Feb 2011
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When mine did this I replaced the heater by pass valve under the hood on the passenger side. This valve prevents heat when the AC is on. When it does not work properly you get no heat. Mine would stick and occasionally release itself under acceleration. It is vacuum driven.
Yes I was thinking this could be part of the problem, the valve get vacuum when heat is off and when heat is on vacuum drops (I believe thats how it checked out).
Does anyone have a scematic on the vacuum setup for a 2000 V10 4x4 ?
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ferrwrench
1973 - 1979 F-100 & Larger F-Series Trucks
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Jul 27, 2007 09:54 PM
