Hi All ,
I have a 95 960 . I feel hot air coming through the vents while drivng , after the car has been parked in the sun for about 4 hours. I have the fan off and recycle on. and temp is set to coldest. Is this normal? I took it to the dealer and they verified the recycle door and heater valve etc and didnt seem to think anything wrong with the car. But i feel the warm air coming through the vents and after driving the car for abt 30 mins and park it in the shade , and when i go back inside the car after a while, i feel like the car has been filled with that hot air..is this all normal ? any help is greatly appreciated.
thanks in advance.

Dear sr912,

Good p.m. and may this find you well. Do you get hot air, even when you have the air-conditioning turned "on"? If so, that could mean a failure of the solder joints on the relay or the main connector, on the printed circuit board, inside the control module. The joint failure may be so small, that it is not visible to the unaided eye. If you can use a soldering iron (25 watts), you can re-flow the solder on these joints.

The relay - rectangular and black - has four "legs". Behind it are the 12 or 14 solder points for the main connector. These, too, should be reflowed. Use only rosin core solder (plumber's solder is "acid core" and it will damage electrical/electronic items).

If the airconditioning is "off", the heater control valve may be leaking internally, allowing some hot water to circulate through the heater core. If the heater control valve is the original, it is 9 years old, and perhaps due for a change. The valve is not costly.

Finally, the vacuum tube to the heater control valve may have come loose - or may be cracked - allowing the valve to stick in the open position. The dealer technician should have spotted this.

Hope some of this helps.

Yours faithfully,

spook

Hi Spook ,

Thank you very much for the reply.

I have the A/C off . And the hot air seems to be coming only when i drive the car after i park it in the sun for a while.

When i drive the car after the car has been parked overnight , i dont seem to feel that hot air coming.

The Delaer/Rep said that even when the recycle button is on 10% of the air will come from outside. He said he aslo vaccum tested the valves. And i specifically asked him to check the heater Valve and he said there doesnt seem to be any issue.
I am just wondering if the dealer/service rep. missed anything or is this just normal? Did anybody have this kind of issue on their car and if so ,can anybody please tell me how they got it fixed.?

Please let me know.