1995 E320 Strange A/C problem
 

I bought this car last year, since then I am having A/C problems.4-5 months ago I changed, compressor. expansion valve, Whole hose assembly, speed sensor (back of the compressor), Climate control unit. A/C worked fine few month now in vegas about 110 degree and my problem started again :mad:
When you run the car first time if in garage A/C works perfect if you don't trun off it will cool without any problem, but after turning off and restart it gives hot air. Sometimes 2-3 times turn on-off the car A/C will start back, but sometime even after 10-12 times turning on and off the car it still gives hot air. I am thinking again it might be climate control unit. It does only if temperature is very hot outside (in las vegas average 110-115 whole summer) so please hellllpppp
Thanks

I've seen faulty belt tensioners cause this problem. At the moment the engine fires the tensioner "bounces", causing the belt to slip momentarily. As we all know, a slipping belt will cause the compressor to shut off until the next key cycle. I'd take a close ook at the tensioner during cranking/start-up. Keep us posted.

Yep I had that problem too when I owned mine and it was as stated above the tensioner. Then I had the problem again when the TBA was going bad and the idle would get too low and the a/c would shut down until the next key cycle.

Chris

I know that is been caused by speed sensor of the compressor. I am sorry if i forgot to mention compressor works, I am more leaning towards mono valve but I don't know what kind of relationship between heat and valve yet. Thanks for reply