QuestionQUESTION: My Deville climate control does not provide heat when temp. is set to max of 90 degrees> A/C works great! Please help.
ANSWER: Are you POSITIVE that the radiator and the plastic over flow jug are at the full mark ?.
When engine is at normal operating temperature, Is one of the heater hoses going thru the firewall just a bit hotter than the other ?. CAUTION: HOSES ARE VERY HOT.
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QUESTION: Radiator full, overflow full, one heater hose hot and the other hose is warm. Only cool air going to windshield when selecting de-fog on climate control panel. Cool air coming out of dash vents with 90 degrees selected. Any help would be appreciated.
AnswerOK, If you ONLY get air from the defrosters this would either be a fault with the vacuum line going to the A/C-Heater programmer and or a programmer fault.
If you are mechanicaly inclined or know of someone who is, You will need simple electrical schematics, Test procedures and picture locations of the components within the system that is causing you problems of which can't be done on this website which only allows one picture. I do not have a website so you will have to e-mail: onlineautohelp@msn.com in order to obtain the information.
