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Dash Air now coming out of defrost vent


wildmandmc

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have a horizon itasca, 2000 DP. (eng a/c) last time went camping a/c coming out of front vent, when we left went to defrost vent,

Switch is not stuck, as if i switch it to heat , heat comes on. just wont switch back to front vents, told could be a pinched line or fallen off of connection, where do i start to look. 300 Cat eng.

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The blend doors in the dash of cars/trucks usually work off vacuum motors. I would see if you can locate a leak in your vacuum canister which most probably is located under the dash. I would check on the right side in the area of where the wife would have her feet. Maybe she knocked something loose there.

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  • 3 months later...

Since you have a CAT engine, DP pusher. You have a vacuum motor on your front firewall. If you listen, prior to turning the key to engage the starter, you should hear the pump motor running. Start with that, then it becaomes easy in locating the tubing that may have come off, if the motor is good

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