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Well my girls truck isn't running it's ac right -standard ac seems to Be blowing harder than the max ac does. I also hear a humming sound which I'm pretty sure is comming from the ac. So I'm pretty sure this means her ac is going out but the question is what exactly is it and his do i fix it? Thanks for the help guys/ gals
Seen it several times here over the years. Look for a plastic bag or such in the return vent near the floor. Max air recirculates the cabin air, standard pulls from outside. A walmart bag or something similar will get sucked in there fairly easy. Might can reach it without pulling anything apart, or you might can pull it out with a piece of wire.