swordfish 30 Report post Posted January 27, 2010 (edited) Hello guys, I have owned the car for seven months from now and I have come up to some very strange things that my car is doing. The first one is that it has this vibration through the whole body which happens from time to time when the revs are around 2000 rmp... this happens independently whether the car is going down the road or just standing still the vibration is still happening. Now the second problem is my fan makes the woooooo noises and that is changing it you go faster or slower... I guess since its on the belt it should make those noises? What do you think am i correct. Third problem when I am driving I have this deep kinda rolling bouncing sound... can be heard when seat in front can't be when seat at the back... happens only if you go on the uneven surface of the road. And the last one I have a whistle sound from my main belt I have bought the original belt from BMW when I bought the car because the sound was there when I bought it. Can it be the tensioner? Because, if you spray water on the belt the noise would go away and I can hear the silent work of the engine... just perfect. And the last one I have a pretty big idle on the cold when it warms up the idle goes away. Before you'll think anything I have changed the air filter and the plugs on the bosh ones. The gaps where perfect and tension was as well so none of these two thing would be a problem. Please if you know anything about these problems or had come up in front them before let me know. I will appreciate all help I can get. Cheers. Edited January 28, 2010 by s_w_o_r_d_f_i_s_h Quote Share this post Link to post Share on other sites
*Glenn* 854 Report post Posted January 28, 2010 (edited) Two things I can derive from that (1) Viscous coupling sounds like its locked up solid This can trigger the knock control to activate as well (2) Idler and or tensioner bearings for the alternator need replacing. With an M3 and your limited knowledge ( no offence intended) I suggest you get it checked by a BMW dealer or specialist Edited January 28, 2010 by *Glenn* Quote Share this post Link to post Share on other sites
oscar90 0 Report post Posted January 28, 2010 deep rolling sound isin't the spare tyre bouncing around the boot or something silly is it? Quote Share this post Link to post Share on other sites
swordfish 30 Report post Posted January 28, 2010 deep rolling sound isin't the spare tyre bouncing around the boot or something silly is it? Might be... however less likely because it is locked on the bolt so it is hradly do any movements around the bolt... but I will check to make sure... Quote Share this post Link to post Share on other sites
swordfish 30 Report post Posted January 28, 2010 Two things I can derive from that (1) Viscous coupling sounds like its locked up solid This can trigger the knock control to activate as well (2) Idler and or tensioner bearings for the alternator need replacing. With an M3 and your limited knowledge ( no offence intended) I suggest you get it checked by a BMW dealer or specialist thank you. will take this into account Quote Share this post Link to post Share on other sites
