Little round grill

[markt944]

Theres a little round grill thing next to the cigarete lighter on oval dash models LHD its connected to a motor via a long rubber pipe ,its classed as a sensor in the Porsche diagrams

Anybody know what its for?

Thanks Mark

[exitwound]

Temperature sensor, I believe.

[Tidybuoy]

Yes, this is the interior temperature sensor which is used byt the automatic climate control system.

[aj951]

Isn't the sensor actually located at the end of the tube just in front of the little motor and the grill on the dash is just that, a grill?

[Porsche-O-Phile]

Yes.

[markt944]

If its a sensor how come it has a motor linked to a fan?

Mark

[aj951]

The fan pulls air from the cabin across the sensor so that the climate controller can sample the cabin air temperature. The climate controller can then adjust the temperature according to what you have the temperature control dial set. The climate control system has three sensors, one that samples cabin temperature, one that samples outside air inlet temperature, and one that samples temperature in the air mixer.

[onZedge]

Originally Posted by aj951

...The climate control system has three sensors, one that samples cabin temperature, one that samples outside air inlet temperature, and one that samples temperature in the air mixer...

Ahhh, the "automatic" climate control. In my opinion, I like my "manual" single slider control better.

[fast924S]

Yea The manual is cool, Until the slides jam and all you get is hot air, Like mine is now LOL

[markt944]

Originally Posted by aj951

The fan pulls air from the cabin across the sensor so that the climate controller can sample the cabin air temperature. The climate controller can then adjust the temperature according to what you have the temperature control dial set. The climate control system has three sensors, one that samples cabin temperature, one that samples outside air inlet temperature, and one that samples temperature in the air mixer.

Ah of course never thought of that had a quick look at it today , and guess what?


The sensor was covered in fluff after years of haveing cabin air sucked over it ,that cant help how good it works

Its probably that and the broken heater clips that are to blame for my climate control not working properly

Got the clips on order ,just waiting for them to turn up


Does anybody know what the air chamber sensor is like to get ?


Thanks again Mark

[aj951]

Does anybody know what the air chamber sensor is like to get ?


I'm not sure what year car you have but Pelican has the air chamber sensor, reference item 35 in the Heater, A/C part diagram for 87- 91 years. I have never replaced this sensor so I am not sure how hard it would be to replace. You can sometimes find the complete Heater A/C assembly on ebay for a reasonable price and use parts from it.