I have a 2016 T880 and the a/c fan motor at times will not reach full speed.I have installed a new motor and blend door actuator and still at times motor will not go to full speed.The filters have been replaced.Evaporater cleaned and all actuators for inside air,vents,and defroster are working.Any ideas?
Blower fan
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by mike216, May 29, 2021.
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Bad switch likely. Had a 660 a few years back that had the same problem and swapping the switch fixed it. Could also be a short someplace.
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I’d suspect the blower resistor
FLHT and truckdriver31 Thank this. -
Rideandrepair Thanks this.
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I have a 2015 389 and had sporadic issues with my blower not working on high speed, then the defrost not working on the dash only setting and finally the push button for A/C would not stay on. The A/C Heater control module took care of all of my problems. Yours may or may not be the same issue as mine.
krupa530 and Rideandrepair Thank this. -
You have to replace the whole module or just the switch?
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Rideandrepair Thanks this.
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Rideandrepair Thanks this.
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