AC not blowing cold..
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AC not blowing cold..
Ok let's see if this is something I can fix or should I take to a technician...
Here's the problem the AC in my 2007 ML350 stop blowing cold all of a sudden so I figured most systems loose about 2 ounces of refrigerant a year so 2007 it was prob just low so I hook up a gauge to the low pressure side and it's saying it's over pressed. I never put in any refrigerant and it was working fine all these years so don't see how it could be over pressure. It has a compressor that doesn't have a clutch on it so it's always on when I turn off the AC button you can see the pressure gauge spike high meaning the compressor or something turns off then when I turn the AC back on the gauge goes a lot lower but still in the over press range but the needle is also throbbing a little up into the yellow marker then back into the over press red. When I turn on the AC also the electric fan motor that cools the engine comes on so that's not a problem and the heat works also.. where should I start?
Thank you..
Here's the problem the AC in my 2007 ML350 stop blowing cold all of a sudden so I figured most systems loose about 2 ounces of refrigerant a year so 2007 it was prob just low so I hook up a gauge to the low pressure side and it's saying it's over pressed. I never put in any refrigerant and it was working fine all these years so don't see how it could be over pressure. It has a compressor that doesn't have a clutch on it so it's always on when I turn off the AC button you can see the pressure gauge spike high meaning the compressor or something turns off then when I turn the AC back on the gauge goes a lot lower but still in the over press range but the needle is also throbbing a little up into the yellow marker then back into the over press red. When I turn on the AC also the electric fan motor that cools the engine comes on so that's not a problem and the heat works also.. where should I start?
Thank you..
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Joined: Oct 2011
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From: Bronx, N.Y.
2002 ML 320 & 2006 ML500
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MBWorld Fanatic!
Joined: Oct 2011
Posts: 7,107
Likes: 765
From: Bronx, N.Y.
2002 ML 320 & 2006 ML500
