Call Of The Week - May 17, 2025 - Ron Ananian, The Car Doctor - 2008 Honda Ridgeline - Intermittent No Blower Motor Operation - (855)560-9900 24/7 Hotline
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Show Notes
Call Of The Week - Ron Ananian, The Car Doctor
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Vehicle: 2008 Honda Ridgeline
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Issue: Blower fan and AC stop working after restarting the car (typically after refueling)
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Behavior:
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No blower, no AC compressor-
Comes back on after driving or waiting
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Happens intermittently
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Most Likely Cause:
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Blower Motor Power Transistor (Resistor Module)
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Controls blower speed and provides ground
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Common failure point on this vehicle
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Failure prevents both blower and AC compressor from working
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Recommended Action:
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Replace the blower motor power transistor
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Located under dash, by blower housing
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Use OEM or Denso for reliability
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Optional Diagnostics:
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Check for 12V at white/blue wire (blower power)
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Test blue/black wire for ground (from transistor)
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Bypass transistor ground to confirm blower motor works
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