View Full Version : engine noise

09-28-2010, 06:36 PM
Hi I have a 1999 m3 with 135,00klm replaced the vanos because it rattled @ about 1500-2000rpms ,the new one from vac motorsports is quiet ,but,now I hear a rattle @ idle,and goes away when u rev up....is it the vanos again?..I asked a couple of shops and they say its normal.I asked vac motorsports they said same ,but I dont think its normal...could it be the upper timing chain tensioner? does anyone have idea? thanks Dan

10-23-2010, 05:36 PM
since I posted this Q I replaced the upper tensioner, which looked fine enyways,rattle still there ,u can barley hear it at idle ... did more research,and came to accept the fact that these vanos units r what they r some r noisier then others ,even though mine just replaced ;so if anyone have Qs let me know might be of help........also does anyone recomend a good shop for new software like dinan ?.....Dan

10-24-2010, 10:59 AM
i hear all the rant and rave about MarkD software...

10-25-2010, 11:07 AM
Definitely. A few of my friends went to MarkD. They love it! I'll be going in the spring after my build for sure *th-up*