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Old 12-30-2022, 02:23 PM   #6
Keith Seymore
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Join Date: May 2009
Location: Motor City
Posts: 9,149
Re: Help with HVAC issue

Ok - I'm back.

By way of update, I replaced the control head back in June and that seemed to do it.

Until this past weekend.

It was bitter cold (like 4 degrees) and we were heading out for a 20 hour trip (10 down to SC and then 10 back) and after driving for a while we noticed we were still freezing. Engine temp was about 185 deg.

I checked and there was no air flow out at our feet, even though the fan was making plenty of noise. I ended up switching the discharge to "face" (out the vents and the driver side vents were blowing nice hot air but the passenger side vents were both blowing ice cold.

Does this sound like a mode door problem? Where is that located? Can it be reset, or replaced?

Thanks in advance -

K


Also - pretty sure I returned the original HVAC control head, since there was a core charge.
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