IML: Are there any Auto Temp Pros around here?

[NicodasKroll@xxxxxxx]

Hi,

I had a hard time figuring out, what's going on with my Auto-Temp System. Now I hope I found the problem and I need your help:
The system only puts out warm and hot through the floor ducts. When I heat up the in-car sensor with a lighter (I've got the dashboard apart)the center flaps open, the blower speed slows down)and heat goes down. The more I heat up the sensor, the colder it gets (AC works).
Now I suspect a bad in-car sensor and of course I don't have the Auto-Temp Tester.
Does anybody have a reference for the resistance of the in-car sensor?
My sensor shows 520 ohms at 70° Fahrenheit (20° Celsius).
Or mabe someone has a known good sensor and can check the resistance.

Thank you from Gemany,

Nico