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JIm Mathews
JIm ... 5/7/2014
1988 Mercedes Benz 420SEL Base 8Cyl4.2L - Engine
Purchased this car with retrofitted R134 AC. Brought to local Shop. They put 2 pounds 134 in and cannot get AC cold
Car does not get even slightly Cold. I was told maybe mono valve, etc. Blower motor works fine. Just no Cold AC at all!! They want to put in a new compressor, drier, etc!!
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  • GT500Knights
    GT500Knights 5/7/2014
    Did they also include the necessary oil into the system? Without the oil, the compressor will fail. There are many things that can go wrong with the ac system, and it is very prone to leaks. Even the smallest leaks can cause the refrigerant to leak from the system within a weeks time, preventing the system from turning on (safety feature for compressor if refrigerant level is too low)

    Also I just looked up your car on alldata, 2 lbs is too much refrigerant. It's actually supposed to be about 1 lb 12 oz.
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