Question about Honda Accord

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My 1993 Honda Accord has a loud buzzing sound from near the glove box, from what appears to be the heater directional control or blower, but the buzz starts immediately when the ignition switch is turned on, with the engine running or not, and with the heater blower running or not. It's electrical-related, because the turn signal causes a slight simultaneous variation in sound pitch, probably because of voltage variation. Running the engine also raises the pitch, for probably the same reason. The blower works fine, and I can hear its quiet sound and feel the air stream when it's on, but the loud buzz never stops until I turn the ignition switch off. What could the problem be?

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  • richard_mont Jan 31, 2010

    I don't know what a kick panel is and I don't know what a "reply" is. I can't get close enough to identify the buzzing component because I'm not a contortionist. But I have more information now. I removed the fuse for the "heater control relay, fan, and rear window defroster" and the buzzing stopped. I now have a thought. I understand from my Web research that there is a motor that changes the air flow pathways, and maybe that's controlled by the "heater control relay," which is located elsewhere, in the engine compartment. So maybe the motor is causing the noise. But why would it run continuously, even when the heater blower is off? Maybe the relay is causing the problem, but the noise comes from the heater control motor.



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Can you remove the kick panel and then isolate what component is causing this buzz. It almost seems as if you have a reply that is defective.

Posted on Jan 31, 2010

  • GetMeOttaHere Feb 01, 2010

    Reply = relay in my last response. A kick panel in a panel the covers the left and right foot well area's on a vehicle. Since you were able to lcate the fuse and pull it, causing the sound to stop, you can now put it back in, open the hood where the fan relay is. Pull each relay until the noise stops again. Now you have found your fan relay....replace it to stop the noise.



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1990-93 Accord (click for zoom)


Fig. 1: Remove the glove box and frame


Fig. 2:
Air conditioned models require the removal of the control unit. Handle it carefully


Fig. 3: Remove the lower covers from the blower unit

Hope help with this (remember rated this).

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990-93 Accord
See Figures 2, 3 and 4
  1. Disconnect the negative battery cable. If so equipped, disable the Supplemental Restraint System (SRS).
  2. Remove the glove box.
  3. Remove the glove box frame (lower support)
  4. If not equipped with air conditioning:
  5. If equipped with air conditioning:To install:
  6. Install the blower unit and tighten the retaining nuts.
  7. On air conditioned vehicles:
    1. Install the lower covers and the retaining band.
    2. Install the control unit bracket and carefully engage the wiring connectors to their proper location.
    3. Install the kick panel and reposition the carpet.

  8. Connect the wiring to the blower assembly. For non-air conditioned vehicles, install the air duct and tighten the screws.
  9. Install the glove box frame and install the glove box. Note that some of trim on the frame is held with 2-sided tape; replace the tape when reassembling as necessary.
  10. If applicable, enable the SRS.
  11. Connect the negative battery cable.


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