'92 190e 2.6 - A/C blowing pretty cold when I'm running on the road, but after about 15 seconds at idle at a stop light, the cold air stops. Upon accelerating again, it cools off again after about 15 seconds.

I do alot of DIY, but I know next to nothing about A/C work. Can anyone give me an idea of what I'm dealing with in this kind of problem?

Thanks,

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Toddro
Franklin, TN
'92 190e 2.6
'91 190e 2.6