heater motor

1991 CHEVROLET S-10
260,000 MILES • 6 CYL • 2WD • MANUAL
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DENNIS MONTGOMERY
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  • 2 POSTS
how to tell if your resistor or relay is out on the blower motor 91s10,what would go out first
Nov 19, 2010 at 6:41 PM
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HMAC300
  • ✓ASE Certified Mechanic
  • 48,601 POSTS
  • ASE Certified Mechanic
usually the resistor goes out first. If you put your blower on high it bypasses the resistor and usually will work. but if it doesn't work at all then you need to check to see if the switch is bad, the resistor, or the blower. if you disconnect the bloser and touch the hot lead with a test light and it lights up then it's your blowr that's bad.
Nov 19, 2010 at 6:45 PM
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DENNIS MONTGOMERY
  • MEMBER
  • 2 POSTS
it would only work on high now i turn it on blower will not come on could the relay be bad
Nov 19, 2010 at 7:11 PM
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HMAC300
  • ✓ASE Certified Mechanic
  • 48,601 POSTS
  • ASE Certified Mechanic
yes the relay could be bad but like i said previously, put a testlight at the blower lead and if it gets poser or the light lights, then it's thebloweris bad. Make sure to check the fuses as well..
Nov 19, 2010 at 7:24 PM
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