Quote:
Originally Posted by blackmega3500
It's more common than you think, what he described is exactly what I dealt with that the resistor and blower fixed.
The blend doors usually cause inconsistent delivery from the vents from I've seen. And they don't often just refresh after sitting.
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I'm pretty sure the blend doors on your truck are still vacuum controlled though. The 4th gen's switched to stepper motors for control (about time) and I had one failing that would allow for terrible AC (like described), then when winter came, it would not let much heat at all out. That's when I finally dug in and found the issue. Wish I would have done it way sooner.
Either way though, I replaced my blower and resistor recently too, just because I was going through the whole system and they were cheap. My blower started making a whining noise and I didn't want it drawing too much current and hurting other components.
Blower ($42):
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
Resistor ($28):
2010 DODGE RAM 2500 PICKUP 6.7L L6 DIESEL Turbocharged Blower Motor Control Module / Resistor | RockAuto