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A/c doesn't work-blows out hot air. last year took it to dealer and they recharged the a/c and put Freon in it but within a few months hot air was blowing out again.
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The system will need to be recharged with freon and if there is no air flow in the front then there may be a stuck vent flap that won't move or a faulty motor that moves the flap.
More likely the recharge blew a o-ring and you have a leak. When your Cavalier was blowing hot air and a recharge fixed it that means it was low on freon which lets o-rings dry out, go back to the shop and have them leak test it. They use a pressurized dye to find the problem. If it's blowing it's not the cooling fan relay, they may have meant compressor relay but I'd have a leak test done first it's not expensive and easier that chasing unknown possibilities.
Hi
there.When a compressor is replaced,
two things are in fact being replaced - both the compressor and the refrigerant
(Freon) and if the problem is resolved as a result which of those two replaced elements
caused the original problem?Well you
will never know and so before the compressor is replaced you need to have you’re
A/C system recharged – it’s by far the most cost effective initial thing to do.In general A/C systems loose at least 10% of
their effectiveness each year through loss of refrigerant and so given the age
of your car; it’s the first thing to focus on.A professional A/C centre will also be able to tell you whether your
compressor is working properly after having a refrigerant recharge by the
monitoring the operating pressures in the A/C system.
You could need a recharge of freon or your A/C pump is bad. You can go to your local garage and have them recharge with an aftermaket freon kit or the dealer and have them put it on an a/c machine and really diagnose the problem
Unfortunately, the A/C systems on the GMT400 (92-99) GM SUV's were not particularly reliable. A fuse may have blown (unlikely), compresser may be bad, the condensor could be out, or the entire system may need replacement.
My advice? Take it to a different mechanic, or a dealer.
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