HaZzArDHD

1990 mustang gt.
my ac isn't working properly, it blows cold air and all but it comes out very low, even on high it still barley comes out. any idea where i could start looking for the problem? had the a/c recharged and was blowing super cold air last summer, but now im sweating my a$$ off coming home from work in the dang Ga Heat.

mattdel

Given that it still barely works, I'd venture a guess and say you have a tiny leak, probably in an Oring connection or possibly the shrader valves on the hoses. Get a leak test/recharge, should be fine.

edit: ahh misread it. disregard and go down.

dawson1112

Are you sayin the fan isnt blowing except on low or that it isnt very cold?? If the fan is only blowing on low it could be a blower moter resister the blower moter itself or the switch is bad. If its not blowing very cold air you may have a problem with the blend door not closing the heat off all the way. I may be mistaken but usually when the blower moter resister block goes bad the moter will only work on high . You probly have a bad blower moter

mjr46

first thing to do is hook a set of gauges up and see what the pressures read, I assume you are still r-12?? also I assume that you mean air is not as cool as it should be and that blower speed is not an issue, also when temps reach close to 100 degrees , don't expect output temps to be in the low 40's, we've been close to 100 with high humidity here with heat indexs well over 100 and various customers have complained that their a/c's don't cool as well, had one today, long story short,after verifying the pressures and blend door operation was fine as well as sufficient charge, output at idle , best we could get was 54 degrees and cruising down the road 46 degrees = well within specs vs temp outside

Dj_Seph

Here with it being 110+ outside the best I could get my car to do was 58 degrees at idle and 50 running. Don't know about you but in a sealed up car with good quality tint, you should be fine, I don't sweat a lick in my car out in AZ.