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2000 C230 air conditioning

1 reading
746 views 2 replies 3 participants last post by  khomer2  
#1 ·
I need to get the temperature coming out of my ducts down a bit. The current reading is around 70 degrees Fahrenheit.

I am guessing that this has never been serviced, at least not in the past ten years given what I know of the history. It is a low mileage car (104,000) that has been generally well-cared for.

I was going to just put in a can of 134a using one of the twenty dollar hose/gauge things that I have, but neither one will will fit the low-side valve. My Internet sleuthing indicated that 134a never breaks down, or wears out so this seemed to be an economical solution. The guy at Auto Zone said I had the correct one and to just apply a thing called "Elbow Grease." My own brand of elbow grease seems to be lacking in power however, particularly given the tight fit location of the valve which is to the left of the Windshield washer container.

Is there an adapter that I need? Am I doing something incorrectly? Or should I be taking this to Mercedes, Meineke, or Pep Boys for a complete evacuation and recharge? Is there a definite advantage to that approach v. the quick approach?

Thanks in advance,

Don
 
#2 ·
Assuming you have the correct port, there is no trick to it. There is a high and a low side port, they are different sizes, the high side port being the smaller of the two. They do need to be put on very square with the fitting. If you want to try lubricating it, use a small amount of PAG oil on the fitting so you dont contaminate the system, and try again. Also, not sure what your fitting looks like, but make sure that the valve is turned out(closed), pull the ring back, snap it on, then open the valve.
 
#3 ·
@don,
r134a can aka suicide can.

Follow the proper procedure if your looking to have long term cool running AC.
Just saying.