How to Replace Blower Motor Resistor

[Mythic]

Well I just did a Delphi Radiator RA 20109 in my back in Oct. I got it from Amazon for $160 with free shipping. Do not see any now but there are some on EBay for $169 with free shipping.


right on. Thanks Tricky.

 

[Mythic]

D the radiator today. $130 from autozone. Then went to do the thermostat and one of the bolts broke in the manifold. DAMN! I drilled the bolt and went at it with an easy out, but then the easy out sheered off as well. WTF?! Spent hours trying to drill the easy out with very little success. My neighbor is a diesel mechanic and he is going to bring me some carbide bits tomorrow. Then I will drill it out and do a heli coil. This should have been a 5 minute job! So frustrating.

 

[Tricky's_Limitedhoe]

Take your time, once done you will be all good.


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[Mythic]

Finally got everything put back together. Ended up using a heli coil for the one I had to drill out. everything is good to go now. No leaks. Brand new thermostat, brand new radiator and all new fluid. Im a happy camper.

 

[tooslowtahoe]

just replaced my Resistor today and for a beginner it wasn't that hard, smaller hands would help i guess and a 7mm wrench is the most valuable tool for this job. even the most unskilled could figure this one out.

 

[dkh_524]

On mine it used to only really work on high the others just kinda worked on the same setting. Now it doesn't work at all this could be the problem right?

 

[Tricky's_Limitedhoe]

Could be control switch, relay, and or blower as well. Run a hot wire to blower to test it. If it works change resistor and go from there.


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[Jeff Davis]

i usually just use my police baton and tap it once and it starts blowing

Yukon, What was the problem with yours when you had to tap it? That's what mine does. Bump it, it comes on and runs fine... ?

 

[tahooe]

My ac will work for about a minute or two then stops blowing air and makes a loud constant, sort of low pitched squeal, does anyone know where this problem may be coming from?

blower going bad

 

[Stepside_fever95]

I have a 1999 Suburban and I cannot turn on the fan at all. I've replaced the fan speed switch a month ago, and the relay, and resistor a few days ago. Tested the blower motor and it worked. I'm thinking it may be the fan speed switch because it doesn't engage on low until you select medium low.

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