wierd rattle NOT something loose

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Apr 5, 2006 | 09:30 PM

#16

C6C6CH3vo

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From: sc

My car makes electrically controlled mechanical noices with keys in pocket, stock electrical system too, beat that.

Apr 5, 2006 | 11:44 PM

#17

GeToFFmE

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haha i dotn wanna beat that i jus wanna fix my problem~~~~~~~~

Feb 13, 2011 | 07:41 PM

#18

white_evo27

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From: NJ

Quote:

Originally Posted by Impulsoren

Ok I have been having this rattle for a long time. I never really noticed it until I got the snow tires on because they are 10x quieter than the stock tires.

During light acceleration (pedal 1/3 or less) I get a rattle that sounds like a relay cycling on and off very rapidly. It comes from the driver's side under the hood area. It goes on for about half a second if I press lightly on the gas in any gear while the RPMs are low. It does stop after a half second or so regardless of pedal position.
It also happens when I let off of the gas from light throttle.

I guess it could be any relay, but it is fairly loud so must be large (such as the ECU relay under the hood) or something like the ACD pump.

Is this normal? Does anyone else have this sound? What is it? Is it related to my Flashed ECU (maybe idle speed stepper motor over driving itself)?

WOW! bringing this FOSSIL thread back to life! does anyone know what caused this? my downpipe has some slight rattle to it, but at 1/3 throttle and less i get this loud whine/rattle that sounds electrical... anyone have any idea on this? its loud and annoying, and the radio only drowns out so much of it... please help