Stuck on defrost

[larson]

hey guys my break pedal feels like it should and my break booster and vacuum pump are both a little over a year old. Where do I go from here to figure out why my ac stays on defrost?
The ac compressor is shoot so it unplugged at the moment but I still like to use my vent on a nice day.

 

[Clb]

Small airlines under dash???
Them 1\16" one dont allways make a hissing sound.

 

[DaveBen]

NO vacuum defaults to defrost. Look for lines disconnected or a bad vacuum pump.

 

[chris142]

Also check the white one near the passenger hood hing that always breaks.

 

[laserjock]

Also check the white one near the passenger hood hing that always breaks.

This.

 

[shawn deere]

Mine used to not work. Then it started working by itself. I think the pickup was sitting forever before i bought it

 

[sjwelds]

Brake.

 

[79jasper]

Also check the white one near the passenger hood hing that always breaks.

I thought that was the recirculation? (Aka max setting)

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[madpogue]

^^^^ Yeah, that's my understanding. Ours was broken for a while and it didn't affect the other HVAC ops. Leak has to be further "upstream", maybe right at the distro box / manifold where all the vac lines converge.

 

[79jasper]

I know mine was rotted, and didn't affect vent selector.
But now I get colder air. Lol

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[riphip]

Could also be broken blend door.