03 c240 a/c
#1
03 c240 a/c
i have a c240 4matic the a/c was working and then it just stopped i keep it on auto. now the little red light is on, on the ac/off button and will not go out the pressures are balanced and good please any helped would be good i am thinking about getting a a new cluster but firgured i would ask first thanks
Last edited by jerryrigged; 02-13-2010 at 07:34 PM. Reason: change email response
#3
pressure
they are equal but i can't remimber the the number in the manual it says the sys is in destress maybe low on frion but checked high and low pressure and your right they are eqaul just a few pounds low like lest than 5 psi
#4
AC compressor
It is possible that you are low enough that the low pressure switch turns off the compressor. It is not abnormal that it is 1 lb low as some freon can leak from the compressor shaft seal. Once the compressor starts, the high side should increase to 150-180 PSI and the low side should decrease to 35-40PSI.
Alan.
Alan.
#6
ok i will contact mb on the up date, I have fount 1 sensor in line it is a 4 wire plug in all my other cars i have had a low and high pressure switch but i don't see it on this one does one switch control it and i have fount it behind the front bumper. when i have chearged a/c in the past i just bypass the switch to get the compressore gone then hook back up afterwards can i do that on this car to check for bad switch and may psi is to low to kick on if not how would i do it thats for all you guys help also that have and will give your input
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