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Blower motor resistor

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72GTS351CJ View Drop Down
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    Posted: 16-November-2017 at 12:51PM
What's the deal here? Looks like plastic rivets. Any help would be appreciated

Edited by 72GTS351CJ - 27-November-2017 at 2:32AM
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Post Options Post Options   Thanks (0) Thanks(0)   Quote californiajohnny Quote  Post ReplyReply Direct Link To This Post Posted: 16-November-2017 at 4:11PM
yes that's what they are, just gently work them out Wink
JOHN
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74 CORVETTE COUPE CUSTOM
90 S10 BLAZER 4X4 LIFTED
77 CELICA CUSTOM
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79 COURIER VERT. SLAMMED
75 VEGA V6 5 SPD
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 72GTS351CJ Quote  Post ReplyReply Direct Link To This Post Posted: 17-November-2017 at 12:46AM
Thanks C.J. I will pull the glove box and try and massage it out. I have a melted plug on my heater switch so I figured I'd start here
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 72GTS351CJ Quote  Post ReplyReply Direct Link To This Post Posted: 27-November-2017 at 2:38AM
It physically looks good. What would be the proper way to test it. I have a melted plug at the heater switch. I figured it was this or the blower motor. I don't mind changing both but I can't seem to find the exact resistor. Thanks for any help
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 72FordGTS Quote  Post ReplyReply Direct Link To This Post Posted: 27-November-2017 at 7:52AM
I can check a factory service manual to see if there is anything there on how to check the resistor.  But I probably won't be able to get back to you until tomorrow.
Vince

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Post Options Post Options   Thanks (0) Thanks(0)   Quote 72GTS351CJ Quote  Post ReplyReply Direct Link To This Post Posted: 27-November-2017 at 12:56PM
Don't knock yourself out. I'm trying to find a replacement anyway. I see a few on eBay that look similar but not exact. I might take a shot with the best looking candidate
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Rockatansky Quote  Post ReplyReply Direct Link To This Post Posted: 27-November-2017 at 2:15PM
ohm meter?
 
plug it back in & check volts in each range?
 
FWIW if the plug melted the resistor is probably still working (getting hot)
 
melt down might be caused by a poor connection in the plug
 
if worse comes to worse pretty much any resistor block you can find with the pigtail can be spliced in ...
 
think Mustang, F series


Edited by Rockatansky - 27-November-2017 at 2:19PM
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Big Bird Quote  Post ReplyReply Direct Link To This Post Posted: 27-November-2017 at 3:15PM
Agree with Rock, put a meter on it and measure resistance. Probably a bad connection, nothing discolored and no evidence of a melt-down.
The above post should be read in a "Grumpy Old Man" voice.
Almost forgot: "Get off my lawn!!!"
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 72GTS351CJ Quote  Post ReplyReply Direct Link To This Post Posted: 28-November-2017 at 6:52AM
Thanks. I see your point. I found a n.o.s. one I'll throw it in anyway and move on to the melted plug
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 72FordGTS Quote  Post ReplyReply Direct Link To This Post Posted: 28-November-2017 at 2:29PM
Rick, is your car is an A/C car?
 
If so you can check the draw at the blower motor by running an ammeter in series. According to the OEM specs, an A/C car should have the following draw at the motor (at 12.2 volts)
 
low:  5amps
med-low:  11 amps
med-high:  17 amps
high:  23 amps
 
You can also check the blower switch for shorts to ground by turning it off, and using a test light to probe between terminals for each setting.  If it lights up, you have a short.
 
Start with this and see what you find.  Good luck.


Edited by 72FordGTS - 28-November-2017 at 2:30PM
Vince

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Post Options Post Options   Thanks (0) Thanks(0)   Quote 72GTS351CJ Quote  Post ReplyReply Direct Link To This Post Posted: 28-November-2017 at 2:41PM
Wow!!! Great information. Thanks for going out of your way for me. I'll be at it this weekend. And yes a/c car.
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