A/C only blows through defrosters
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Year: 1988
Model: Comanche
Engine: 4.0
A/C only blows through defrosters
I have a 1991 Cherokee, and my a/c blows ice cold. However, it will only blow through defrosters no matter what the controls are on (heat, a/c, vent, feet). I have changed out the controls in the dash and the vacuum booster canister thing behind the bumper on passenger side. It has plenty of vacuum at the canister. Thanks in advance for any input/help.
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Year: 1998 Sport
Model: Cherokee
Engine: 4.0
I have a 1991 Cherokee, and my a/c blows ice cold. However, it will only blow through defrosters no matter what the controls are on (heat, a/c, vent, feet). I have changed out the controls in the dash and the vacuum booster canister thing behind the bumper on passenger side. It has plenty of vacuum at the canister. Thanks in advance for any input/help.
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Year: 1990
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#11
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Year: 1998
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This ^^ You should also have 1 or 2 (cant remember) small red vacuum hoses on the passenger firewall under the hood. By the heater core area. Make sure these are hooked up too.
Last edited by Lead Foot; 12-09-2012 at 04:10 PM.
#12
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When I got the jeep the reservoir was cracked. I have replaced it, and when I pull the vacuum line off of it, it has plenty of vacuum. I also replaced the heat/ac controls in the cab under the radio. I just checked the 2 vacuum lines that come out of passenger firewall by heater core and they are both connected.
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Year: 1998
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Here this might help you. Go to page 24-23
https://froehlichsuspension.3dcartst...mages/hvac.pdf
Did your canister have 1 or 2 vacuum lines? I know some of the older ones have 2. Trace those lines back. Search for abondoned lines around the battery, ect that someone might have left and just spliced or capped.
https://froehlichsuspension.3dcartst...mages/hvac.pdf
Did your canister have 1 or 2 vacuum lines? I know some of the older ones have 2. Trace those lines back. Search for abondoned lines around the battery, ect that someone might have left and just spliced or capped.
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