HAVE YOU CHEKED IF THE A/C COMPRESOR IS TURNING ON WEN YOU HAVE YOUR HEATER ON? MINE DOES THAT BUT I DO NOT KNOW IFTHERE'S A RECALL FOR THIS PROBLEM. :help: :help: :wave:
The compressor turns on all the time, whether you have the heat or A/C on...just a way to keep everything cycled and oiled.
Check your fluid - need to be full or you could develop air bubbles (form of vapor lock) or even collapse a hose. You should be good, unless you have a gunked up heater core.
Try back-flushing the heater core. Do a search on here. Someone else talked about it. I had the same prob. Flushed the heater core & now I actually have to turn it down cuz it gets HOT! :clap2:
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