Air Vent Ratcheting Sound

endotechmgr · 12-13-2012, 09:57 AM

2006 MDX - ratcheting sound from air vent system when temperature is adjusting. The blower and recirculating fans have been replaced under warranty by the dealership. Computer is not issuing any error codes. Anyone experienced the same issue; if so, what component is causing it? Any information will be appreciated.

SuperTech · 12-13-2012, 08:56 PM

Air mix motor.

I imagine if you set the temp to full cold or full hot, the noise goes away.

endotechmgr · 12-14-2012, 11:22 AM

Yes, the ratcheting sound does stop when temperature adjustment is set at maximum high or maximum low. There have been instances when lowering it just 2 degrees will stop the sound, as well as setting the blower fan on maximum for 10-20 seconds.

AmanM · 12-30-2012, 11:53 PM

Have this same problem with my 02 mdx when the AC or heat is on full blast, very annoying! How much is it to get it fixed?

TexasHonda · 12-31-2012, 10:35 AM

see following link.

Rattling Center Dash (Heater A/C Air Mix Motor)

good luck

12-13-2012, 09:57 AM	#1 (permalink)
endotechmgr Registered User Join Date: Dec 2012 Posts: 2	Air Vent Ratcheting Sound 2006 MDX - ratcheting sound from air vent system when temperature is adjusting. The blower and recirculating fans have been replaced under warranty by the dealership. Computer is not issuing any error codes. Anyone experienced the same issue; if so, what component is causing it? Any information will be appreciated.

12-13-2012, 08:56 PM	#2 (permalink)
SuperTech Registered User Join Date: Jun 2005 Posts: 1,562	Air mix motor. I imagine if you set the temp to full cold or full hot, the noise goes away. __________________ Acura Master Technician/Shop Foreman ASE Certified Master Auto Technician ASE Certified Advanced Engine Performance Specialist ASE Certified Service Consultant

12-31-2012, 10:35 AM	#5 (permalink)
TexasHonda Registered User Join Date: May 2010 Location: Katy, TX Posts: 344	see following link. Rattling Center Dash (Heater A/C Air Mix Motor) good luck __________________ 2003 Acura MDX w/ Nav 2006 Acura TSX 2007 Honda Accord 1994 Honda Accord See you down the ROW!

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12-14-2012, 11:22 AM	#3 (permalink)
endotechmgr Registered User Join Date: Dec 2012 Posts: 2	Yes, the ratcheting sound does stop when temperature adjustment is set at maximum high or maximum low. There have been instances when lowering it just 2 degrees will stop the sound, as well as setting the blower fan on maximum for 10-20 seconds.

12-30-2012, 11:53 PM	#4 (permalink)
AmanM Registered User Join Date: Oct 2012 Posts: 12	Have this same problem with my 02 mdx when the AC or heat is on full blast, very annoying! How much is it to get it fixed?

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