Blower motor noise only on high speed

HVAC, heating, cooling, air handling. Anything air temp related.
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spyboy
I am merely driving my van
I am merely driving my van
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Joined: Fri Dec 20, 2013 6:08 am
Location: New Orleans

Blower motor noise only on high speed

Post by spyboy »

changed my blower motor and everything came out fine except I have a hum type noise on high speed, other speeds quiet as a mouse. Defective motor? case around motor is falling apart but everything else is cool. sounds like the noise is coming from passenger side and seems to be inside van? Any thoughts?
2001 AWD Astro SLE, "too stock"
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doyoulikeithere
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Re: Blower motor noise only on high speed

Post by doyoulikeithere »

try to find a "case around motor" that is in better shape at a P&P maybe ?
2021 Yamaha Tenere 700 - Blue.
2016 Yamaha XSR900 - Silver.
1990 Astro - AWD - Brown.
1987 Astro - With 5 Speed & 4wd - Silver & Blue.
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Smiliesafari
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Re: Blower motor noise only on high speed

Post by Smiliesafari »

Take the motor out and hook it up directly to the battery. If it hums you will know it's the motor. If not then it's the housing.
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Topic author
spyboy
I am merely driving my van
I am merely driving my van
Posts: 15
Joined: Fri Dec 20, 2013 6:08 am
Location: New Orleans

Re: Blower motor noise only on high speed

Post by spyboy »

So this morning when I started van ao on high, quiet! In a bit the noise started not as loud as yesterday. Is there something that can heat up associated with the high speed. Plus since it was so quiet on startup it seems not to be motor.?
2001 AWD Astro SLE, "too stock"
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