1991 chevy astro van heater blower motor

1991 CHEVROLET ASTRO
199,400 MILES • 6 CYL • 2WD • AUTOMATIC
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FFMICK
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  • 3 POSTS
I am having an issue w/ the heating/AC.
the blower motor will not run without "tapping" on the relay located on the passanger side firewall.I have replaced this relay & the resister, but no change. Also if the blower is running, changing the fan speed will shut the blower down. any ideas ?
Dec 2, 2010 at 11:40 PM
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RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
Inspect and test the blower switch and wiring to it could be shorting out-
Dec 2, 2010 at 11:53 PM
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FFMICK
  • MEMBER
  • 3 POSTS
First THANKS !! im going nutz here !
Switch like the slector in the van ?
or a switch on the blower ?
all the wireing was cool even cleaned all the concacts i colud see also.
Dec 2, 2010 at 11:59 PM
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RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
The HVAC blower switch
Dec 3, 2010 at 12:33 AM
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FFMICK
  • MEMBER
  • 3 POSTS
thanks man !!
im on it tomorrow !
Dec 3, 2010 at 12:37 AM
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