Q: Air conditioner not working

asked by on August 03, 2016

My air conditioner only works part of the time. Sometimes if you bang on the passenger side dash it will start blowing but not all the time. Also when it's not working I have checked under the hood and the compressor line is cooling so I don't think it is the compressor. Also I have a rattling noise when it is blowing. Another thing is that when it's on it cools really well but sometimes when it's set in high it does not blow as hard as it used to.

My car has 83000 miles.
My car has an automatic transmission.

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