I've got an A3 Golf without a/c, and whenever I turn on the fan with temp set to low, hot air (+10 C. over ambient) comes out the vents. What's the deal? Does this car actually vent fresh air, or do I have a faulty valve between fresh air and air routed over heater core? It's been this way since new, really tired of it. To avoid the hot blast in hot temps I just set it on recirculate cabin air. Any clues much appreciated.
I would guess the car has been setting in the sun for some time. It is hot and therefore any air coming in via that system is heated by the latten heat in the vents. Leave it on for a while and the temperature will reduce after a while.
If you mean "blast" as in "a short period of hot air, after which it cools down" it's probably exhausting the hot air that's accumulated in the system from the hot environment.
But if you mean that it keeps on being hot even if you wait, I've had two problems occur with my VW's, either of which will do this for you:
- Bill
the outside air is circulated into the engine bay area to go through a pollen filter, in this short time the air is heated unfortunately.
If the year is 2000 then this must be a A4 Golf.
MotorsForum website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.