My truck is like a politician

[KenW]

It blows warm air out the vents when I get on the brakes moderately hard. It happens whether the AC is on or not. Very annoying in the summer as I live in the desert. Anybody else have this problem?



Thanks,

Ken

 

[DennyDay]

Hot Air

If it were an older truck, I'd look for a vacuum leak. Does the '00 have a vacuum brake booster?

Denny

 

[KenW]

It has a hydraulic brake booster. My first thought was some sort of vacuum problem with the vent controls, but digging in the service manual found that the door that controls the mixture of heated and outside air is controlled by an electric motor.



Ken

 

[baby.driver]

Still sounds like the flap is flappin' when it's not supposed to.



Jay