W201, Climate Control

I have an 87 190dt that is constantly blowing hot air regardless of climate control setting- on or off. Any suggestions? I have seen threads on other sites that pointed to the monovalve. Kent, if it is the monovalve have you written a repair book for the 201 chassis yet?

May 11, 2008 Dear Benz Guru and wise one, I just purchased a 1989 190e with 152,000 miles. Here are issues I found out. 1) The power drivers seat do not work. It will only slide forward but not backward, and the upper recline does not move forward. 2) The Left Rear power window do not work at all. 3) The Drivers door does not Lock/Unlock at all. 4) The headlights flash and a clicking sound under the front passenger dash side occurs when unlocking and locking the car with the passenger door lock. 5) The hood and car top clear coat has peeled off. I was thinking of a whole car paint job with Earl Scheib or MAACO auto paint. The original paint color is a light blue metallic. I was thinking of having the car repainted to a light grey color. Your thoughts please.