My AC works, the car runs great lots of power, but the heater won't shut off. I can direct the air flow to the windshield or side windows, but after 15 minutes it is roasting and I have to open the windows even in the winter.

Anyone have an solution?

thanks,
Kel

 

I have a 94 SL 500 that was doing the same thing, and I replaced the monovalve, and it sloved the problem. Was not hard just a bit tight. Order part from autowarehouse dot com

Tom Blanchard
94 SL 500

 

Attempted to look up first response reference. Possibly means
Auto Parts Warehouse | Car Parts, Truck Parts & Auto Body Parts Online - Free Shipping on most Auto Accessories & Performance Parts – AutoPartsWarehouse which dows list the part. My 96 is doing the same thing. If I turn the edge dash vents off (on center consul and temperature low, it will ultimately switch. Not a resolution of the problem but will get you home here in Florida.

 

oooops I should have put the web site for parts is autopartswarehouse dot com. or www.autopartswarehouse.com. I have used them with top notch service. I use them as much as possible for my parts needed.

Sorry my error!!