Hello people,

Okay I have a 95 Mercedes E420, I Did not have A/C, I replaced the blower resistor and voila the fan works now. Compressor works fine, I recharged the system and Center Vents are cold,

But here is the problem, The side Vents blow hot air.

Things I checked were the Mono-valve, I actually blocked it so it will always stay closed , meaning no hot coolant can go thru. Climate Control unit was checked and it is fine.

Now it is a problem, I feel like I am 80% done fixing A/C issues on my car. I don't need heater, that is why I blocked the mono valve. All I want it to do is blow cold Air for now, as my budget is quite limited.

Any suggestions as to where I should start looking. All help is appreciated. Thank You.

Also one funny thing happend, When I was installing the mono valve, after I blocked it, I started the car and the air was working perfect, all vents were cold, but as soon as I stepped on the gas , here came the warm air thru the sides again. To be honest I am Clueless on this one. Thanks Again.