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Radio noise when cranking

Old 11-29-2007, 10:08 PM
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Benton Quest
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Default Radio noise when cranking

Hi,
I have a radio noise that occurs when I start the engine.
I've noticed when the RPM,MPH and other guages go back down on the the initial start up, I get a quick 1 second buzz through my speakers.

It doesn't matter if I left the radio/cd player on or off. I usually cut it off before I get out the car.
You know how it is, it is barely noticable, but I notice it more and more the longer I have the car.

07 and I owned for 2 months.

Is this common? Should I take it in?
I have very much enjoyed the sound system and have no complaints besides that.
Thanks for the help.
Old 11-29-2007, 10:11 PM
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GaussianMist
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Originally Posted by Benton Quest
Hi,
I have a radio noise that occurs when I start the engine.
I've noticed when the RPM,MPH and other guages go back down on the the initial start up, I get a quick 1 second buzz through my speakers.

It doesn't matter if I left the radio/cd player on or off. I usually cut it off before I get out the car.
You know how it is, it is barely noticable, but I notice it more and more the longer I have the car.

07 and I owned for 2 months.

Is this common? Should I take it in?
I have very much enjoyed the sound system and have no complaints besides that.
Thanks for the help.
I'm not sure if it is normal but on my 2008 with the stereo turned off when I press the DIC, I hear an audible hizzing sound coming out of the speakers. Kinda weird...
Old 11-29-2007, 11:46 PM
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Big D's
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before you start your car put your seatbelt on then start =no more
Old 11-29-2007, 11:50 PM
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tpereira
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I have it too ! wierd.
Old 11-30-2007, 12:12 AM
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keyplyr
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Have you tried changing the plug wires to a better grade?





Old 11-30-2007, 09:57 AM
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bobbyj1
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My '06 does that as well?
Old 11-30-2007, 10:28 AM
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calemasters
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Originally Posted by Benton Quest
Hi,
I have a radio noise that occurs when I start the engine.
I've noticed when the RPM,MPH and other guages go back down on the the initial start up, I get a quick 1 second buzz through my speakers.

It doesn't matter if I left the radio/cd player on or off. I usually cut it off before I get out the car.
You know how it is, it is barely noticable, but I notice it more and more the longer I have the car.

07 and I owned for 2 months.

Is this common? Should I take it in?
I have very much enjoyed the sound system and have no complaints besides that.
Thanks for the help.
I am not sure, but this my be RFI from the instrument panel cluster (IPC) during the initialization sequence. I don't think the radio is the issue, it may be the IPC. This seems to be "normal" for the C6.

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