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unidentified humming sound

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Old Jun 21, 2024 | 02:42 PM
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rednrollin's Avatar
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From: Yuba City, Ca
Default unidentified humming sound
I have a 2005 srt roadster. With the engine off and key removed, I noticed today what sounds like a small motor running or humming come from the super charger area. Any ideas?
 
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Old Jun 21, 2024 | 03:35 PM
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ZERACER's Avatar
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Default Re: unidentified humming sound
How long was the engine turned off?
 
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Old Jun 21, 2024 | 04:01 PM
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rednrollin's Avatar
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Default Re: unidentified humming sound
It is still running and I parked it three hours ago. The battery has gone down from a 12,7 to a 12.2..
 
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Old Jun 21, 2024 | 05:34 PM
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ZERACER's Avatar
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Default Re: unidentified humming sound
My first thought was your recirculating fan isn't turning off?
 
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Old Jun 22, 2024 | 09:43 AM
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Default Re: unidentified humming sound
There is so obvious issues as the engine fan now kicks on shortly after starting the motor and stays on
 
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Old Jun 22, 2024 | 10:07 AM
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Default Re: unidentified humming sound
I used a auto stethoscope to try an pin point it since it is so faint and it appears to come from the sc.
 
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Old Jun 22, 2024 | 11:56 PM
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Default Re: unidentified humming sound
Originally Posted by rednrollin
There is so obvious issues as the engine fan now kicks on shortly after starting the motor and stays on
If the engine fan revs up to high speed with the key on but the engine off, that would indicate a bad RCM (Relay Control Module).
 
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Old Jun 24, 2024 | 09:57 AM
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Default Re: unidentified humming sound
fan inside the ECU box?
 
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