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SC430 - 2nd Gen (2001-2010)

Very Strange Rattle

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Old Aug 18, 2015 | 06:15 PM
  #1  
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Default Very Strange Rattle

I just got home from a 650 mile trip and I have pinpointed something I have been hearing for a while but couldn't figure it out. It's a very very faint rattle (something like the sound a hard drive makes) and it seemed to be coming from behind the dash. I experimented a little today and this is what I noticed.

It is actually coming from somewhere around the gas pedal and it only does it when you are neither accelerating or decelerating. In other words, when the engine is at equilibrium if that makes any sense. It's a tiny sound and I should just turn the radio on and forget it, but it's just one of those little things that bugs ya.

Has anyone else experienced this or am I losing my mind? lol
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Old Aug 18, 2015 | 07:26 PM
  #2  
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I have noticed odd sounds coming from the dash with only the key on engine off. It's like the climate control servo actuator motors are moving things in the dash.

Do you get this when cruising down the road or stopped, I understand your gas pedal in a neutral centered area.
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Old Aug 19, 2015 | 04:55 AM
  #3  
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It happens when cruising down the road. It won't make the sound when stopped or when the engine is shut down. I am wondering if it is something to do with the VSC computer. The next time I drive I am going to turn off the VSC and see if I still hear it.
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Old Aug 22, 2015 | 05:02 AM
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I had a similar sound and after trying different things it turns out it was the servo motors for climate control. There are 4 on the sc. I was able to get to all of them and clean the dirt off of the motor actuator. Once I did that the noise disappeared.
Theazz
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