A/C Problem

[Randy's Space]

My 2004 WranglerX a/c switches blowing air from vents to floor when accelerating switches back to vents when slowing down. I replaced complete vacuum line still having problem. Anyone got a fix?


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[BaddestCross]

It's definitely a vacuum leak. Finding it may be a bitch, though.

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[oldroadie]

The vent system is vacuum driven so you're on the correct path. Do you know which vent state is default when vacuum isn't present (I don't) because that will be a clue.


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[Randy's Space]

The vent system is vacuum driven so you're on the correct path. Do you know which vent state is default when vacuum isn't present (I don't) because that will be a clue.


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Will have to check on that. Thanks


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[Randy's Space]

It's definitely a vacuum leak. Finding it may be a bitch, though.

--
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Build Thread - Adventures of Fiona - https://wayalife.com/showthread.php?t=47407

Was trying to avoid tearing out the dash if I didn't have to but if ya gotta ya gotta.


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[gyoja75]

The vent system is vacuum driven so you're on the correct path. Do you know which vent state is default when vacuum isn't present (I don't) because that will be a clue.


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Should be the defrost when vacuum isn't present.


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[gyoja75]

Was trying to avoid tearing out the dash if I didn't have to but if ya gotta ya gotta.


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Did you check the line under the battery tray?


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[Randy's Space]

Did you check the line under the battery tray?


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I replaced the whole vacuum line from intake to resavoir with OEM part.


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[Randy's Space]

Should be the defrost when vacuum isn't present.


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Stayed on defrost about a year ago. Found cracked vacuum hose going through firewall, replaced it, worked fine until last couple of months. I also replaced resistor card at same time.


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[gyoja75]

A/C Probkem

Bad vacuum reservoir or check valve?

http://ww2.justanswer.com/uploads/tracker40/2012-07-11_220431_1.gif


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[oldroadie]

My guess is failed check valves since the AC vent operates properly when the motor spins up.


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