Q: Ac only cold at idle or low rpms

asked by on October 12, 2017

My ac is been acting up lately, it only warms at idle or low rpms, is not low on Freon and the compressor is engaged all the time even on high rpms (when stops cooling ) I cleaned the expansion valve screen (filter) the other day, it was full of chunk like mold or something, about it didn’t work ( when idle or low rpms works great , very cold) so do you have any idea on what the reason coul be?? Thxs

My car has 90000 miles.
My car has an automatic transmission.

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