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Old 06-21-2018, 12:31 AM   #1
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Heater Blower Motor Question

We are experiencing a heat wave here and I am enjoying using the factory A/C in my 72 which works fine. My question is when I have the fan on the highest position the noise form the motor is super loud as opposed to the 2/3 lower fan speeds. Is this a normal thing with factory A/C as you can't really have a conversation in the truck when the blower is on high.
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Old 06-21-2018, 08:13 AM   #2
Andy4639
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Talking Re: Heater Blower Motor Question

Mine doesn't. It's pretty quite and that with my hearing aids in.
It's fairly easy to take out though.
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Old 06-21-2018, 09:08 AM   #3
brown7373
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Re: Heater Blower Motor Question

It is definitely louder, because it is m moving more air. Hard to determine if yours is working correctly without hearing it. Is it rumbling or squealing or just louder from moving significantly more air?
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Old 06-21-2018, 09:45 PM   #4
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Re: Heater Blower Motor Question

Quote:
Originally Posted by brown7373 View Post
It is definitely louder, because it is m moving more air. Hard to determine if yours is working correctly without hearing it. Is it rumbling or squealing or just louder from moving significantly more air?
Just louder. I'd say its 50% louder than at the speed before.
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1972 C10 Custom/Deluxe 613 Highlander 406/700R4
1999 White Tahoe LS 4x2 with Z56 Police Package
1992 K1500 GMC Suburban

Members I have personally met: MusicMan70 - HeavyD - ChewyChevy67 - StingRay -71SWB4x4 - 67 Burb - DeadheadNM - too much stuff - bc65 - das601

" 4 Things When Used are Gone Forever "

" A Word After it is Said - A Missed Opportunity - Time once Passed - Trust after its Lost "


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