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 Old 07-17-2013, 07:03 AM   #1
 
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Default Fuel pump noise?

Hey everyone. I have a '13 speed3. Since last month when I got it, I'm hearing a noise in the engine bay after I shut the car down. Almost a high pitched squealing sound. I've heard it could be one of the fuel pumps de-pressurizing. Has anyone experienced this or have any input?

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 Old 07-17-2013, 07:05 AM   #2
 
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Get used to it, our cars have very loud fuel pumps.

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 Old 07-17-2013, 07:14 AM   #3
 
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like this Weird Mazdaspeed3 noise - YouTube
https://www.google.com/url?sa=t&rct=...,d.dmg&cad=rja


like he said above, normal. If not the same post a vid of your noise.
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 Old 07-17-2013, 07:31 AM   #4
 
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The sound you are hearing is probably the throttle plate adjusting.

The only high pitched sound the HPFP makes is when the rail valve releases excess pressure.

Last edited by rfinkle2; 07-17-2013 at 07:57 AM.
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 Old 07-17-2013, 07:48 AM   #5
 
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I have the stock TMIC, so I put a lobster on it when I leave work. *Poof* gourmet meal when I reach the house. It usually stops squealing after the first mile or two.
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 Old 07-17-2013, 09:41 AM   #6
 
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Originally Posted by ms6mil View Post
like this Weird Mazdaspeed3 noise - YouTube
https://www.google.com/url?sa=t&rct=...,d.dmg&cad=rja


like he said above, normal. If not the same post a vid of your noise.
That high pitched sound is what mine sounds like
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 Old 07-17-2013, 09:58 AM   #7
 
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Originally Posted by greek_dressing View Post
That high pitched sound is what mine sounds like

Normal.

Correct me if I'm wrong but I believe its the drive by wire throttle control system shutting down. (throttle plate motor noise maybe).
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