I JUST BOUGHT A 04 BMW E46 330I WITH THE SPORT ...
2004 BMW 330
November, 3, 2012 AT 10:37 AM
I just bought a 04 BMW E46 330i with the sport package, It sounded alright when I got it but then it makes this noise only at idle and when I rev the engine it goes away or the noise diminishes quite a bit. Also the engine does not make the sound right at start up usually when it gets to normal operating temperature does it start making this noise. The noise is like a galloping, rotating chain clanking, slapping noise, but it sounds fine and when I put foot on the brake and rev the engine and it also goes away and when I rev the engine. Does not sound like a vanos rattle or chain tensioner noise I just replaced the primary chain tensioner and it quieted the noise quite a bit.
here is a video of the noise
here is a broken link just incase I can't post links yet
hxxp: // w w w (dot) youtube (dot) com / watch?v=f_tnQRQt6BI&feature=plcp
Things I have already checked or changed
-radiator flush but not the engine block flush
- changed the oil
- belts and pulley all are good
- fan clutch seems to check out fine
- I have heard it could be vanos seals but that is a different rattle from what I can hear.
- doesn't knock with acceleration so don't think it is the rod knock
Please help this probably will only be able to be answered by a BMW enthusiast because I have asked numerous people and they can not figure it out and I have changed alot of things and they made no difference.
From my experience, noise can be difficult to diagnose from cyberspace. The link is not functional.
November, 5, 2012 AT 11:00 PM
I cant post links on this forum yet, so until then I put up a broken link it is the same as a link just control copy, control paste and get rid of (dot) and xx in hxxp basically if you put
on the end of a youtube link
http://www.youtube.com/ watch?v=f_tnQRQt6BI&feature=plcp this link probably wont work but if you put it together it will work
If I just put up the link they will cut it off and it will just go to You tubes home page
it will go to the video they wont let video posting for me yet anyways.
November, 6, 2012 AT 6:00 PM
You state, "does not sound like a VANOS rattle or chain tensioner noise" I would like to know what has you say that? Are you sure you know what a VANOS rattle sounds like?
November, 6, 2012 AT 9:17 PM
Well In the beginning I thought it was a different sounding galloping clanking noise, and it disappears underload and under acceleration. I believe the car has a mild vanos rattle but the really bad sound only happens at idle and when I push the gas and turn while accelerating in a take off it makes it louder. But then when straightening it out of the turn and driving off it goes away and sounds fine.
* We have heard possibly a loose timing chain we changed primary tensioner and thought we may have to get in a change the upper tensioner but didn't want to open up the whole engine. And I wanted to try to pinpoint what it is because I have been changing all the usual suspects but that did not change the clanking galloping sound.
Can a vanos rattle sometimes sound like clanking galloping noise only at idle? Or does it only usually rattle when accelerating and idle.
I have thought maybe the vanos seals but they are more of a rattle with RPMs mine goes away with rpms especially under load but if I hear alot more people say loose timig chain I was going to open it up and change the upper timing chain tensioner and vanos bearings and seals.
I have not ruled out VANOS it just sounds like somthing else in my opinion.