Last post on Jun 26, 2012 at 5:24 AM
You are in the Mazda 626
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Mazda 626, Heating / Cooling, Sedan
#10 of 13 AC Problems with 1991 Mazda 626 DX
Jul 30, 2011 (3:03 pm)
I have checked the coolant and it is fine. The compressor comes on, but it only blows hot air. Everything works, but it only blows hot air. Can anybody give me a list of any possible solutions to this problem. During the winter months the heater doesn't blow any heat. Once the engine heats up, the vents throw out enough heat to keep you warm.
#11 of 13 2000 Mazda 626 Air Conditioning
May 30, 2012 (8:22 am)
The AC on my 626 is working, but it isn't working.
The unit is fully charged... the compressor works when manually jumped... it will then blow cold air.
There is nothing in the computer code information that gives any clues.
There is some sort of relay or switch not doing it's job. Has anyone else run into this? I don't want to chase the proverbial needle in the haystack unless I have to.
Thanks in advance.
#12 of 13 There is a relay
May 30, 2012 (10:43 am)
There is a relay, I had mine replaced while it was still under warranty. The relays are under the hood on the drivers side. I think there is a relay for one of the cooling fans that runs constantly when the A/C is running. If it goes out it prevents the a/c from turning on. Most of them are the same and can be swapped around to test.
#13 of 13 Re: There is a relay [wayne0832]
Jun 26, 2012 (5:24 am)
I checked the relay by swapping with the horn relay (same relay). When the horn still worked, I knew that the relay was good.
There are two switches (one high pressure and one low pressure - I forget which is which), but one is on the back of the accumulator. That was the culprit.