Touareg :: Air Conditioning Blows Hot Air When Outside Temp Above 88


Aug 28, 2007

The AC blows very cold as long as the outside temp is 88-87 and cooler. As soon as it goes over 89 or so, the air rapidly warms eventually blowing what feels like air HOTTER than the outside ambient. No matter if i shut it down or blow warm air it will not restart until the temperature outside drops below the magic mark (so i dont think the coil is freezing over)... and then it blows frigid air. I don't think it is low refrigerant because of the efficiency at cooler temps and the nearly exact outside temp it changes. It is as if a sensor is activated and nothing but a temperature drop changes its status. It is so predictable that to me it sounds like a sensor or kill switch that is activated. One fan was out. had it replaced and still have the problem. This has been going on all summer and VW stamps everything "could not replicate". 2004 touareg vs 80k miles (with plenty of troubles along the way)....

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Civic - Honda :: Temp Gauge Go Up And A/C Blows Hot Humid Air

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I'll try to be succinct, but the explanation is long. Overall: when driving the car to run errands around town the temp gauge used to quickly go all the way to HOT & the A/C starts blowing hot/humid air. When this happened I was pulling over, turning off A/C & radio & putting the car in neutral until the gauge goes back down, used to take only a few minutes but if driving in town (stop lights/traffic) i have to keep doing this b/c the needle returns to the top quickly. I also started trying putting the car in neutral while stopped at lights or in traffic & if i pushed on the gas pedal & kept the engine at 3K RPM the needle would go back down & A/C would start blowing cold when I started driving again.

The other part of this is if i change the A/C vent diverter from all vents blowing at upper body to vents blowing at face & feet or all vents blowing at feet the green 'recycled air' light goes out & the air starts blowing hot & humid, this persists even if I push the 'recycle' air button again.

Until yesterday this temp gauge & A/C issue has not been nearly as much of a problem when driving on the highway at a consistent speed, in other words when the car doesn't have to idle the problem didn't occur very often, the temp gauge may have moved towards 'HOT' but never got all the way up there. Until yesterday. I had to drive thru town with quite a bit of construction & resulting traffic as well as a few stop lights which sent the gauge go to HOT quickly. When I got on the highway I was expecting the gauge to go back down & the A/C to start blowing cold air.... alas, it did not. the gauge stayed very near HOT the whole time & the A/C never blew cold air. It was 106*F yesterday?

And yet another part of this problem, which the mechanics have told me is NOT related to this problem: in the winter time the heater took an extraordinarily long time to heat up and then would only blow warm air while the car was moving at a pretty high speed, under around 30 MPH and there was no heat, and definitely no heat when idling. I do not remember the temp gauge hanging out at HOT all the time but I do think it would go higher than the middle range.

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As much as I love this vehicle, I'm starting to regret the purchase. After 8 years of a flawless Tahoe and 3 years with a flawless 528i, the Touareg is frustrating me.

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