Heater fan only works on high?????

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Feb 28, 2010 | 07:23 PM

#11

turbo20psi

Diesel Bomber

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From: MD,NC

Quote:

Originally Posted by RAWilliams

When I bought my truck it had the same issue. Pulled out hte resistor pack for the motor, and found a solder broken on the connections. Resoldered it, and it has been holding for the last 8 months. I believe this is a very, VERY common problem regaurdless of the logo on the front of the truck.

Seems like blower motors are made with cheap bearings.The logo doesnt matter.

Mar 1, 2010 | 04:17 PM

#12

Fiveseven

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Joined: Jun 2009

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From: Dallas

Quote:

Originally Posted by Whit

I know its prolly a fuse or something stupid but I cant seam to figger this out

anybody seen this before????

2001 Dodge Cummins

I was about to ask the same question and I just changed mine it worked thanks for the info guys!

Mar 2, 2010 | 07:59 AM

#13

mopar26287

Diesel Fan

Joined: Feb 2010

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From: Parsons, WV

Quote:

Originally Posted by blkjack

I am thinking that it might be the blower resistor, being that it only has high the fan is at the straight 12v speed the resitsor would step down the voltages to lower the fan speed. It is under the glove box in the heater/ac housing should be faily accessable.

i agree i had a 99 1500 and the dealer told me the sma ething, my heater core went out on me and mine went bad, thats what they said to replace.

Mar 9, 2010 | 07:08 AM

#14

Whit

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From: Why-homing

well I messed this one up, yesterday I took a look and figgered the resistor must be in that lil box under there, poped it loose and a small motor and 2 plastic gears fell out, its the damn door actuator for the heater, now I cant get that POS back together, no damn room under there

Mar 9, 2010 | 07:46 AM

#15

RAW

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From: Alberta

Damn, that really sucks. I hope you don't have to pull the dash and the entire heater control box out to fix it. If you do, it's not that bad really. Enlist a buddy, a case of beer, and a day.
If you haven't found the one you are looking for, it is near the fan, 2 screws holding it in place. Towards the front, and left of the blower motor itself. Right beside the fan motor cooling tube. At least that is where mine is.

Mar 29, 2010 | 04:32 PM

#16

Whit

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From: Why-homing

Quote:

Originally Posted by RAWilliams

Pulled out the resistor pack for the motor, and found a solder broken on the connections. Resoldered it.

exactly what I found...........on the resistor itself there is a small jump leg on one of the terminals going over to another leg, the solder broke loose so I just re-soldered and its all good now