08-05-2008, 09:46 PM
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#1
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GLS member
Join Date: Jun 2008
Location: FL
Posts: 3,723
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Replaced Blower Motor Resistor... Still Doesn't Work ?
Replaced the blower motor resistor with a brand new AC Delco one, and the blower still only works on the highest speed. What else could it be?
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08-05-2008, 09:55 PM
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#2
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GLS member
Join Date: Jun 2007
Location: Utica, Michigan
Posts: 2,227
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just check the fuse. i know it sounds stupid, but i had mine only working on high and i checked the fuse for kicks and giggles and it looked burned out. i changed it and everything was fine.
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2000 Oldsmobile Alero GL (sold)
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08-05-2008, 10:23 PM
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#3
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GLS member
Join Date: Jun 2008
Location: FL
Posts: 3,723
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Quote:
Originally Posted by TheEdgeofSanity
just check the fuse. i know it sounds stupid, but i had mine only working on high and i checked the fuse for kicks and giggles and it looked burned out. i changed it and everything was fine.
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I checked all the fuses when I first got the car, I'll check them again but I don't think thats it...
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08-05-2008, 10:34 PM
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#4
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GX Member
Join Date: Aug 2008
Location: NJ
Posts: 138
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I've had a problem with my AC too. It started to only work on the 2nd and 3rd highest settings. Nothing else. Then it gave out and four days later it started working again. It just stopped working again like last week and I don't think it's going to make a comeback again.
You think the changing the fuse could fix it? Also, how much is a new blower motor?
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08-05-2008, 11:20 PM
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#5
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on vacation
Join Date: Aug 2006
Location: that way
Posts: 2,169
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^^^ I dont think its the motor itself- I think its the Blower Motor Resistor- its like a 20 - 30 dollar part.
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08-05-2008, 11:35 PM
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#6
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GLS member
Join Date: Aug 2006
Location: Grand Forks, ND for school; Langdon, ND home
Posts: 2,632
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check fuses again if the resistor is new. there is more than one fuse for the blower motor.
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08-11-2008, 05:48 AM
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#7
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GLS member
Join Date: Jun 2008
Location: FL
Posts: 3,723
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Quote:
Originally Posted by Midgear
^^^ I dont think its the motor itself- I think its the Blower Motor Resistor- its like a 20 - 30 dollar part.
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lol... Thank you sir, but the title of this thread is ' Replaced Blower Motor Resistor... Still Doesn't Work '
Quote:
Originally Posted by jayson_waltz
check fuses again if the resistor is new. there is more than one fuse for the blower motor.
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Checked all the fuses, twice over. Any relays that could be bad? Anything? Help guys.
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08-11-2008, 05:54 AM
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#8
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GL Member
Join Date: Sep 2007
Location: Claremont, NH
Posts: 299
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you also could have a defective resistor ( not saying you do, but its possible)...which sucks 'cause I'm pretty sure you can't return it once its installed..
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08-11-2008, 05:56 AM
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#9
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GLS member
Join Date: Jun 2008
Location: FL
Posts: 3,723
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Quote:
Originally Posted by Vinman
you also could have a defective resistor ( not saying you do, but its possible)...which sucks 'cause I'm pretty sure you can't return it once its installed..
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The one that I replaced wasn't even bad... Its something else
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08-11-2008, 06:49 AM
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#10
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GL Member
Join Date: Sep 2007
Location: Claremont, NH
Posts: 299
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the 3 that i've replaced didn't look bad either, and work everytime with the new resistor..maybe you do have a seperate problem..maybe it could be the switch itself?
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08-11-2008, 06:59 AM
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#11
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GLS member
Join Date: Jun 2008
Location: FL
Posts: 3,723
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Quote:
Originally Posted by Vinman
the 3 that i've replaced didn't look bad either, and work everytime with the new resistor..maybe you do have a seperate problem..maybe it could be the switch itself?
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It could be the switch itself, but I highly doubted it at first.
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08-11-2008, 07:04 AM
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#12
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GL Member
Join Date: Oct 2006
Location: Oshawa
Posts: 323
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I replaced the blower motor resistor on my girlfriends sunfire a few years ago with a new AC delco part. The new resistor was DOI. I returned it for a new part and it worked just fine. If you are still able to use certain speeds I would still suspect the resistor. You could always return it for another part if it is easily accessed.
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08-11-2008, 07:55 AM
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#13
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Gone
Join Date: Mar 2004
Location: Lockport Ny
Posts: 19,244
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anyone really know how the resistor works? (i've never really seen one) I guess theres suppose to be some kind of differing resistance on each contact. Does the resistor only go in one way, or is it possible to install backwards?
maybe find the old one and throw an ohm meter across each contact, then try the new one, see if there is a difference.
...and if someone could test a new one, that is definitely functional, and let us know what specs we're looking at....
at least that way we'll definitively know if its dead, or your searching somewhere else.
maybe check the contacts on the switch, with the car on, to see if you have power going to the switch? Your motor certainly works, its just a matter of figuring out where after that, it died.
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08-11-2008, 03:29 PM
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#14
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GLS member
Join Date: Jun 2008
Location: FL
Posts: 3,723
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Quote:
Originally Posted by cherrington17
Does the resistor only go in one way, or is it possible to install backwards?
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Yes it only goes in one way, its not possible to install backwards without modification.
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08-11-2008, 04:35 PM
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#15
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Gone
Join Date: Mar 2004
Location: Lockport Ny
Posts: 19,244
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if the original wasn't bad, and you replaced it with another one that wasn't bad... how do you know both weren't bad?
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08-11-2008, 05:19 PM
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#16
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GLS member
Join Date: Jun 2008
Location: FL
Posts: 3,723
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Quote:
Originally Posted by cherrington17
if the original wasn't bad, and you replaced it with another one that wasn't bad... how do you know both weren't bad?
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I don't know for sure whether the old one was bad or not... But I had a mechanic friend there who was helping me out, when the old one came out, he said that it looks like it had already been replaced a couple times and might not even be the problem. Sure enough, we popped the new AC Delco one in, and nothing.
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08-11-2008, 06:26 PM
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#17
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Master of my Domain
Join Date: Nov 2006
Location: Toledo, Ohio
Posts: 4,072
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Sometimes a fuse will look good but it is not.
Take a DMM to each fuse that deals with the blower motor. Check inside the car both spots and UNDER the hood.
If you dont have a DMM just replace all the ones for the blower motor.
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08-11-2008, 08:02 PM
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#18
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GLS member
Join Date: Jun 2008
Location: FL
Posts: 3,723
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Quote:
Originally Posted by Ryan from Ohio
Sometimes a fuse will look good but it is not.
Take a DMM to each fuse that deals with the blower motor. Check inside the car both spots and UNDER the hood.
If you dont have a DMM just replace all the ones for the blower motor.
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I do have one, but my mechanic did go over all of them with a test light. I think I'll just go ahead and replace all of the fuses anyways since I can get them for free, but I doubt its going to make any difference.
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