2012 Chrysler town and country, blower quits blowing

cbeckman

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#1
Make
Chrysler
Model
Town and country
Year
2012
Miles
103,000
Engine
3.6
After driving awhile, maybe an hour or two, the blower stops blowing even when on the highest setting. After shutting the vehicle off, I will use it a couple of hours later and then it is working again. Any help is appreciated.
 

grcauto

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#2
Does it turn off quickly? Like you hit a switch? All speeds the same?
 

grcauto

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#6
Really need a scan tool that can read the hvac module and see what the evaporator temperature is doing. I'll bet Dan nailed it.
 

grcauto

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#7
As for fixing it that's another story we'll write as you verify it's evap freeze.
 
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#8
Choosing slightly different HVAC settings may prevent the problem from occurring. If you notice the blower output is fading, adjust temp up a little to see if blower output improves in a few minutes.
 
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#9
Some vehicles, mostly Japanese used an evaporator thermostat to switch of the compressor if its temperature was near freezing its contacts were sticking. All the intake air to a MVAC system has to go through the evaporator, if that is frozen, your blower motor will still be running, can hear it, but won't be getting any air flow.

Major problem with vehicles when they approach that 100K mile mark, two motors require replacement, blower and fuel pump motors. Both are brush/commutators motors, the brushes do have a copper content for better conductivity than pure carbon, but they with constant contact wear out. They even can get sticky and lock up in there holders.

Rather replace a blower motor than a fuel pump, with most vehicles, have to drop the tank, and they go bad with a full tank of fuel that doesn't have any means to drain it.

Back in the 60's a GM new blower motor was five bucks from your dealer, but I could purchase new brushes and bushings for about 40 cents and make them like brand new again. Today they are all throwaway, see on your the squirrel cage blower wheel is heat sunk on the shaft, no way to remove it without breaking it, GM is the same way.

Could buy a 20" 120VAC fan from Walmart three speeds for 16 bucks, but really screwing the hell out of us for a tiny little crappy blower motor, with one vehicle was 325 bucks for the POS made in China motor.

Really appreciate finally getting a filter for the evaporator, before, all that crap would build on on the evaporator and a real PITA to remove. Ford was the worse with their stupid evaporator box, system had to be discharged to remove it so you could open it up to clean tons of debris on it. Another source of not getting air.

Condensers are a hundred year old problem, bug collectors, block air flow, and with stupid refrigerants like R-134a, the pressures increase at an exponential rate unlike R-12 that never depleted the ozone layer. That puts a sever load on these stupid single belt drive systems that can break it losing your water pump, and with an aluminum engine will warp and crack the head and forced to replace it.

This is telling it like it is.