A/C Problems
Thread Starter
Member
Joined: Nov 2004
Posts: 151
Likes: 1
From: Portsmouth Ohio
E 320
A/C Problems
Hey all I am having problems with the A/C in my E 320. The problem is the Air will not get cold. I can see the compressor running and I am seeing the gas running through the peep site. No matter what I Have the cabin setting on its stays about the same temp. Where can I start?
Thanks
Brian
Thanks
Brian
Super Member
Joined: Apr 2005
Posts: 800
Likes: 0
From: Northern Cali
W124
did you charge it yourself or did you have someone do it? if you overcharge it you can actually cause it not to blow cold. if a tech did it you can always blame them for the job. i'd just bring it to get it checked if you can't spot anything.
MBWorld Fanatic!
Joined: Dec 2003
Posts: 1,016
Likes: 0
its very hard to diagnose a sytem without having it right there, especially since all we know is that it has gas but blows hot. thats like saying my car has gas but wont run.
it could be your expansion valve (i think this is the culprit!!)
compressor
clutch
condensor
or any number of other things.
it could be your expansion valve (i think this is the culprit!!)
compressor
clutch
condensor
or any number of other things.
Super Member
Joined: Jun 2003
Posts: 713
Likes: 147
From: Aridzona
'15 S550, '10 E350 P1/P2, '02 ML320
Originally Posted by neanderthal
it could be your expansion valve (i think this is the culprit!!)
Senior Member
Joined: Aug 2004
Posts: 285
Likes: 0
From: Richmond, Va.
1991 300E
your sight glass should be clear. If you are seeing "clouds" or bubbles in the sight glass then you are low on freon. you can buy a yellow jacket freon gauge and a schrader valve hose for about $20 and check the pressure on the low side. If you have overcharged the system, it will blow cold, (assuming overcharge is the only problem) but the car will surge badly and as the compressor short cycles on and off and eventually the compressor will lock up. Do you have R-12 or R-134?
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Newbie
Joined: Aug 2005
Posts: 6
Likes: 0
From: Perth, Western Australia
E280, 1995, W124, White
Hi Brian,
I had a similar problem to my 190E, the problem was that the controlling valve/switch between the hot and cold settings was broken for one side of the vehicles which only caused hot air to blow. Now assuming that the W124 has the same exterior a/c mechanicals this could also be the problem.
Cheers,
Jon
I had a similar problem to my 190E, the problem was that the controlling valve/switch between the hot and cold settings was broken for one side of the vehicles which only caused hot air to blow. Now assuming that the W124 has the same exterior a/c mechanicals this could also be the problem.
Cheers,
Jon
