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C4 front rattle ?


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I get a "rattling" noise, sounds kinda like a rattling heat shield on a cat, from the front when I put the power on . Goes away when I let off the power. It is definitely coming from the front of the car in the front diff area.

I have taken the plastic under tray off & it is relatively dry apart from a very small grease spot about 3/4" , also checked the rubber gaiters & they are all fine ?

I am suspecting low front diff fluid but have managed to round filler nut so will check later. Anyone else ever had this ,its a C4 2001.

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Hello Loren ,thanks for responding, it was cold when I finally managed

to get the filler bolt out. I had a pull on the drain plug & that seems as though

"Arnie" must have tightened it up as well,not sure if its ever been changed .

I left the under tray off thinking it may have been the cause of the noise but no,

its worse when cold . It can be induced easily if you turn into a corner & boot it suddenly ?

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  • Admin

You can read others experiences here about using "other" than Porsche gear oil. In most cases that causes problems (like you already have).

If the oil does not look light brown I would change it to the Porsche oil - more expensive but many fewer problems.

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