On my E39 The air coming out of the centre vent is always very warm for 15 minutes or so when I start the car and the engine temperature is still up. This is so even though I've selected the lowest temperature setting and set the controls for outside air, which may be 10 degrees C. Could hot water be getting into the heating coil while the car is parked? Or is the heating coil just being heated by being inside a car heated by the sun or being near a hot engine?
Outside air dellivery too hot
- Thread starter hansthebuilder@optusne
- Start date
Well I have the same problem sometimes. Could be 2 things.
1) When the engine is hot and car parked on hot day, the engine "soaks" the outside air intake with enormous heat. When you start up, the outside air, already hot in the summer, is now heating up a lot more with really hot plastic intakes and filter assemblies from the engine, plus the continuing engine heat while running. If your AC is on, it should not take that long to compensate however if you are running fresh air, it may well take that long to absorb all the heat with the already hot air.
2) If your AC is on and it still is a problem you may have a heater control valve problem. I cannot use auto in mine because if i turn the ac on auto, it can be 100 outside and the ac will blow cold out the center and hot out the dash and floor. not good. So if I use auto , i make sure to selt auto THEN push the dash only switch which i know pumps only cold air. I get the benefit of auto regulation but isolate it to the dash vents only thus cuting off any erroneous hot air up top or below.
In any case, select recirculating air setting to try the difference. You will not be fighting engine heat and outside heat, just the interior heat. Roll down windows for the first minute to let out bulk of heat and you should be cool to go. In fact, use your ventilation timer more often. If you dont know how it works, select, BC on your dash, then select "timer" then set the time. The car will switch on the outside air vents on a low fan setting for one hour and vacate the car of hot air on hot days. When you get in it will be very moderate. I try to time it for lunch time, quitting time or after a round of golf...really works!
Side note, I traveled to Sidney 3 years ago and stayed at the Funk House hostile in Kings Square or something like that??? What a crazy place. Great time there.
1) When the engine is hot and car parked on hot day, the engine "soaks" the outside air intake with enormous heat. When you start up, the outside air, already hot in the summer, is now heating up a lot more with really hot plastic intakes and filter assemblies from the engine, plus the continuing engine heat while running. If your AC is on, it should not take that long to compensate however if you are running fresh air, it may well take that long to absorb all the heat with the already hot air.
2) If your AC is on and it still is a problem you may have a heater control valve problem. I cannot use auto in mine because if i turn the ac on auto, it can be 100 outside and the ac will blow cold out the center and hot out the dash and floor. not good. So if I use auto , i make sure to selt auto THEN push the dash only switch which i know pumps only cold air. I get the benefit of auto regulation but isolate it to the dash vents only thus cuting off any erroneous hot air up top or below.
In any case, select recirculating air setting to try the difference. You will not be fighting engine heat and outside heat, just the interior heat. Roll down windows for the first minute to let out bulk of heat and you should be cool to go. In fact, use your ventilation timer more often. If you dont know how it works, select, BC on your dash, then select "timer" then set the time. The car will switch on the outside air vents on a low fan setting for one hour and vacate the car of hot air on hot days. When you get in it will be very moderate. I try to time it for lunch time, quitting time or after a round of golf...really works!
Side note, I traveled to Sidney 3 years ago and stayed at the Funk House hostile in Kings Square or something like that??? What a crazy place. Great time there.
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