Heat only works on high/83 300td wagon

1983 300 td my heat only works when the heater wheel is on high. the solenoid in the heater line has been replaced. the engine is sufficiently warm billy

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Body and Interior Specific Aid

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Questions and Answers

Chassis Model Number

W123

Suspect

I suspect something is wrong with your climate control panel - but keep in mind the system is complicated and that it may not solve the problem. Although rare you may have a fauly climate control temp sensor.

continuing

I replaced the whole control panel and the wheel. The wheel realy made the diffrence. It doesnt get nearly as hot as max but kind of lukewarm now. before nothing. where s the climate control temp sensor? thanks billy

where is the sensor?

Does anyne know where the climate control sensor is?
Is that the solenoid in line with a heater hose near the firewall behind the exhaust?

thanks
billy

where it is

I found this on biofuel.infopop.cc

If you pull the glovebox out you'll see a foam tube that connects to the little grill on the dash between the center vents. Follow the tube to the other end and you'll find the sensor.