1st 3 Blower speeds not working (HVAC)

NISSAN FRONTIER
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KURTTIME
1999 Nissan Frontier XE 4WD extended cab Pickup
98,700 miles

Only the highest speed of my cab heater (blower) is functional. The lower 3 speeds do not work. Is this probably a bad capacitor or a relay of some kind? How do I locate the relay, capacitor, or switch for replacement? How should I attack this problem?

Thank you!

Kurt Turrell
Mar 2, 2006 at 10:25 PM
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FISHERMAN
  • ✓ASE Certified Mechanic
  • 937 POSTS
  • ASE Certified Mechanic
first check the switch.. some times i found that the plastic melts in to the contacts, because of the load heat ......

start checking that.
Mar 3, 2006 at 9:44 AM
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KNIGHTRIDERKITT2000
  • MEMBER
  • 93 POSTS
try replacing your blower motor resistor, I have a subaru that had the same problem, bought one from a junk yard for $2.50 because they are around 50.00 for my car. that solved the problem.
check behind glovebox in heater housing if not there go to www.autozone.com they have a link to tell you where it is.
Apr 3, 2006 at 12:55 PM
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