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My car ac works very fine in normal conditions. But when I drive it for awhile longer, and often at high speed, it stops cooling. I can still hear the fan sound loud and clear but air flow decreases a lot even at full speed of blower. My car is Chevrolet beat diesel 2011 model.

  • 2
    Has the ac been recharged recently? If it is overcharged, it may be detecting too high a pressure and so shutting down. – HandyHowie Apr 13 '16 at 19:53
  • when i decrease speed of car air flow gets back to normal and with full cooling . – msj003 Apr 14 '16 at 4:08
  • AC is not recharged since i got this vehicle. – msj003 Apr 14 '16 at 6:34
  • @HandyHowie tell me if there could be a problem in my ac? – msj003 Apr 22 '16 at 1:21
  • This might shed some light on your problem: mechanics.stackexchange.com/questions/18949/… – Alexus Apr 25 '16 at 22:44
2

I found the problem. Apparently it was a long piece of paper carried into fan assembly by a mouse. After running for a while paper must be choking the fan and thus stopping the air flow. Thanks everybody.

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