Sheeesh it's hot!

Hi all!

Got a stumper here... need some help!!!!!

Here's the scoop... 84 MB 500SEL, rebuilt climate control pushbutton assembly - installed. Both temperature sensors (inputs to control assy.) replaced with new (one purely for cosmetic reasons, grill would not stay on). Also rebuilt that valve just in front of the firewall right middle side (forgive me, I forgot the proper name for it). Everything works as it should EXCEPT...

Temp control wheel set to 65 degrees - in car temp stays at 75 degrees. Temp wheel set to 80 - in car temp stays at 90... and so on and so fourth. The only setting that works properly is the max cool setting. The in car temp gauge has been verified and is correct, any ideas???

Thanks for the help!

Matt