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Squeaking noise when heat is on

  #1  
Old 02-02-2018, 07:20 PM
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Default Squeaking noise when heat is on

My 2014 with 70,000 miles has just started squeaking when the heat is on. It is most noticeable by the passenger's upper vent. Not real loud, but consistent. It is not apparent in the engine compartment.

Any idea what it is, or what I should do about it?
 
  #2  
Old 02-03-2018, 04:25 AM
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So no noise with A/C on or off? Only when on hot air?

Does it vary in speed or loudness with a change in fan speed? Does vehicle speed affect it?
 
  #3  
Old 02-04-2018, 10:01 PM
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Originally Posted by grim_reaper View Post
So no noise with A/C on or off? Only when on hot air?

Does it vary in speed or loudness with a change in fan speed? Does vehicle speed affect it?
I turned the thermostat down as low as it would go and couldn't get the heat to turn off without also turning the fan off; it is pretty cold out. Turning the fan up drowns it out, so I am not sure what effect it might have. Having the A/C on also didn't affect it. No, it doesn't change with engine speed.

However, the last couple days it stopped squeaking. Not sure if that is good or bad news.
 
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