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85 300SD not blowing once you move thermo past min

824 Views 8 Replies 7 Participants Last post by  mclare
Hey All,

I'm having an issue with my 85 300sd where the blower shuts off if you move the temp control past min. It will blow if it is on min but nothing past that. Defroster won't blow either. I can feel heat coming out. I was thinking maybe monoclave valve but wanted to see if anyone had any other ideas. Checked and replaced the fuses. I can get it to come on randomly once in a while but Sunday night it stopped working again. Any ideas are appreciated.

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Did you ever resolve this? I have the exact same issue. It tends to come and go, has a mind of it's own. The temperature still changes but the only air you get is fresh air, which works overall but doesn't have the same affect as the actual blower.
Guess mine is coming out for sure, it's also stuck on half defrost, half vent all the time. Hopefully for the same reason.
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