a/c problem
Thread Starter
Newbie
Joined: Jun 2015
Posts: 5
Likes: 0
W 140
a/c problem
Hello i have a 2000 mercedes e 320 that got me confused, the a/c freon was low, i tried to recharge but it only took a very little freon, also the low side read 50 psi, and it only took a little bit freon and blowing hot air, compressor did click on but not cold, and condensor fan is good, clutch is good, so my question is how do i check the compressor compression because i think its bad ,but i dont know how to check it without taken it off the car, thank you for your time.
MBWorld Fanatic!
Joined: Jan 2014
Posts: 3,973
Likes: 1,320
From: Republic of Texas
'99 and '05 E55 AMG
Go into diagnostic mode on the air conditioning control panel. It will give you a readout of every sensor to include temperatures pressures, etc. Don't forget to monitor each one as I found an intermittent on the EVAP core temperature sensor that would read accurately and then a few minutes later it would read out 149° and the AC system would shut off as it saw it as a fault in the system.
Do not go throwing parts at the car until you've had a chance to diagnose the system. Do a search and you will find instructions. I'm not at home so I cannot post those instructions at this time.
Try something along the line of "AAC diagnostic mode".
Edit: the AC compressor uses a swash plate to control the pressures. It is not a standard clutch type. Do an internet search and you'll find the difference.
Do not go throwing parts at the car until you've had a chance to diagnose the system. Do a search and you will find instructions. I'm not at home so I cannot post those instructions at this time.
Try something along the line of "AAC diagnostic mode".
Edit: the AC compressor uses a swash plate to control the pressures. It is not a standard clutch type. Do an internet search and you'll find the difference.
