Air conditioner Blowing Hot and Cold Air

2003 TOYOTA COROLLA
135,000 MILES • 2WD • AUTOMATIC
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CARRIE WILSON ESTES
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  • 1 POST
Coming home from a road trip, the air conditioner went completely hot air.

Stopped and got some R134 Freon/refrigerant. Filled the line and the line and air turned cold for about ten minutes. Immediately back to hot air only.

Did research and was advised to try the horn relay in the M/G CLT (air conditioner relay) to check if bad fuse. Air got cooler. So we used it for the next two days and keeps blowing hot, then getting cool, then hot all in a minute or two time frame. It has been doing this alternating back and forth for days. It works much more consistently in the cooler evenings. Please help.
Jul 22, 2016 at 11:36 AM
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HMAC300
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  • 48,601 POSTS
it cold be low on Freon or moisture in system from a broken line or leak. it has to be leak checked first then performance tested. if it is a leak it has to be fixed or it leaks out again.
Jul 22, 2016 at 12:01 PM