Black107 Posted July 29, 2009 Report Share Posted July 29, 2009 OMG YES! Finally I've found an explanation for what this horrible whistle is. I always get a fairly audible one when I cold start the engine (usually occurs when the RPM's fall down to idle after the initial jump). Super annoying! I also happens while driving sometimes, usually when letting off like the OP. You can hear the one I experience in this video. http://www.webridestv.com/showvideo.aspx?video=12152 OP is this the same? Link to comment Share on other sites More sharing options...
andrew330cisport Posted July 30, 2009 Report Share Posted July 30, 2009 waiting for the parts to arrive at the dealers - i have this problem too! with a bit of luck it will stop the engine light from coming on with fault codes from oxigen sensors! will report back! Link to comment Share on other sites More sharing options...
Darren_ Posted September 22, 2009 Report Share Posted September 22, 2009 i have the exact same problem, really bad whistle or hissing noise on low revs under load going to check it out tomorrow on the car and fingers crossed it should be this problem as its very annoying when you got the windows down thanks o.p Link to comment Share on other sites More sharing options...
ansars Posted November 2, 2009 Report Share Posted November 2, 2009 HI GUYS my 2002 320d makes whirstling noise from 1000 to 2000 revs, i was told its something to do with the turbo. Its an annoying whistle sound bit like a police siren from a distance. could this be the same issue i have here? Link to comment Share on other sites More sharing options...
cooljules Posted February 10, 2010 Report Share Posted February 10, 2010 Good diy write up. Just done mine today. Couldnt of done it without your simple how to guide. So thanks. Oh and mine was in alot worse state than the one you showed in the pics. Link to comment Share on other sites More sharing options...
chris Posted February 11, 2010 Report Share Posted February 11, 2010 Did you find the new boots you put in, seem to be squashed slightly? Well the highest one that attaches to the MAF really. And good write up, well didnt read it but lots of words Having done mine a while ago, it does drive much better now, well idles perfectly. Link to comment Share on other sites More sharing options...
simonlpearce Posted February 11, 2010 Author Report Share Posted February 11, 2010 Chris mate yeah my boots did seem a little squashed but i think if you could be bothered to get all the angles of the boots spot on then you could probably get rid of this. Link to comment Share on other sites More sharing options...
chris Posted February 11, 2010 Report Share Posted February 11, 2010 Chris mate yeah my boots did seem a little squashed but i think if you could be bothered to get all the angles of the boots spot on then you could probably get rid of this. I tried everything, even took them all off again to re-adjust, but the second one seems slightly longer. But if everyone else has it, must be the spec of the boots has changed. Link to comment Share on other sites More sharing options...
cooljules Posted February 13, 2010 Report Share Posted February 13, 2010 Good diy write up. Just done mine today. Couldnt of done it without your simple how to guide. So thanks. Oh and mine was in alot worse state than the one you showed in the pics. The day after i did the diy i discovered that the throttle was sticking. Ive now fixed that problem, but now ive got a new problem and its abit like the original one. Every now and then the car will idle really irradically, to the point where it almost cuts out. I wander wether i need to reset the fault code thingy or not. Can anyone help? Link to comment Share on other sites More sharing options...
dino Posted February 21, 2010 Report Share Posted February 21, 2010 Thanks for this Si!! Im having the exact same problem on my 325 so will check the pipes out later. Link to comment Share on other sites More sharing options...
james86 Posted March 2, 2010 Report Share Posted March 2, 2010 In response to the unit that you say to remove and keep clean of dirt etc, that is the DISA valve, it opens just after 3k rpm for improved air intake to the engine PLEASE CHECK IT when you have it out the car make sure the pin that holds the valve is nice and secure because if it fails and pops out it will be swallowed and your looking at a totally wrecked engine! it is £127 and worth replacing if it is even if it is remotely wobbling. that is all. Link to comment Share on other sites More sharing options...
simonlpearce Posted March 3, 2010 Author Report Share Posted March 3, 2010 The day after i did the diy i discovered that the throttle was sticking. Ive now fixed that problem, but now ive got a new problem and its abit like the original one. Every now and then the car will idle really irradically, to the point where it almost cuts out. I wander wether i need to reset the fault code thingy or not. Can anyone help? Sounds like you ICV (Idle Control Valve) could need cleaning or replacing, hit the search button to find out more on this. In response to the unit that you say to remove and keep clean of dirt etc, that is the DISA valve, it opens just after 3k rpm for improved air intake to the engine PLEASE CHECK IT when you have it out the car make sure the pin that holds the valve is nice and secure because if it fails and pops out it will be swallowed and your looking at a totally wrecked engine! it is £127 and worth replacing if it is even if it is remotely wobbling. that is all. With my infinate wisdom i now know what that thing is, ie the DISA valve. And as mentioned here it is well worth checking and replacing if its faulty, last thing you want is plasti in your engine, it wouldnt make for a smooth ride! Link to comment Share on other sites More sharing options...
Tim_North Posted April 9, 2010 Report Share Posted April 9, 2010 Great DIY Si. Was coming back from Newquay at the weekend and EML light came on just as I left Newquay. Although there has been no loss in power but my mate in another car noticed my car was making a whistling noise on the motorway. Got home, done a search and found your DIY, after checking the intake boot out there is about a 2cm split in it. Now got one in the Garage ready to fit. Link to comment Share on other sites More sharing options...
R7CE X Posted October 14, 2010 Report Share Posted October 14, 2010 DID YOUR CAR MAKE THE WHISTLING NOISE WHILST DRIVING TOO IN LOW REVS AND KEPT COMING WHEN UP SHIFTING GEARS CHEERS Link to comment Share on other sites More sharing options...
Nav Posted October 19, 2010 Report Share Posted October 19, 2010 thanks mate, i found that this was the issue and have ordered just the tube elbow (ganna check the top tube in abit to be sure that doesnt have any splits in it) im really not looking forward to replacing it as it looks soo difficult..what tools / techniques did u use to get off the last 2 clips? Link to comment Share on other sites More sharing options...
simonlpearce Posted October 19, 2010 Author Report Share Posted October 19, 2010 The last 2 clips were a pig and from memory i think i got at them with a socket and extension from under the car. However someone above mentioned that they just cut away the rubber part of the tube to allow for more room. Link to comment Share on other sites More sharing options...
Nav Posted October 19, 2010 Report Share Posted October 19, 2010 i dont think i got the tools for this job Link to comment Share on other sites More sharing options...
simonlpearce Posted October 19, 2010 Author Report Share Posted October 19, 2010 Where you located? If your local i reckon i could do it for you in about an hour tops...im in midlands Droitwich to be precise. Link to comment Share on other sites More sharing options...
Nav Posted October 19, 2010 Report Share Posted October 19, 2010 Cheers for the offer mate, unfortunatly i live in Reading - ill prob just get my dads mate to take a crack at it Link to comment Share on other sites More sharing options...
sanjx Posted March 11, 2011 Report Share Posted March 11, 2011 Simon, Brilliant guide! This is my 1st post, I signed up as a result of hunting around for a similiar guide. Planning to tackle this tomorrow, all parts ordered from BMW including all new clips etc... so hoping a couple of hours should do it. Should I find any additional tips, I will post up. Keep up the good work! Link to comment Share on other sites More sharing options...
simonlpearce Posted March 11, 2011 Author Report Share Posted March 11, 2011 Simon, Brilliant guide! This is my 1st post, I signed up as a result of hunting around for a similiar guide. Planning to tackle this tomorrow, all parts ordered from BMW including all new clips etc... so hoping a couple of hours should do it. Should I find any additional tips, I will post up. Keep up the good work! Glad to be of assistance, i also noticed your local so if you get majorly stuck fire me a PM and if needs be i can pop out to help you. Link to comment Share on other sites More sharing options...
sanjx Posted March 11, 2011 Report Share Posted March 11, 2011 Thanks for your kind offer Simon. I ha a go at it this evening and have somehow manage to get the angle wrong. Can't get the simota filter to fit now lol. Going disassemble it again in the morning and have another bash. I did notice the new one is a tad bit shorter (lower elbow) but dont think that's a contributing factor. Having difficulty sourcing a OEM airbox at the moment. Hate the simota as in my opinion it adds no value but got to make do until I can source a replacement. If I get stuck I may take you up on your offer so long as you'll accept some beer tokens! Link to comment Share on other sites More sharing options...
sanjx Posted March 12, 2011 Report Share Posted March 12, 2011 Think i've broken something now lol. Lost all acceleration and just can't get the Simota to fit back in properly. What a headache, tried again this morning but just not having it. Think I've just amplified an underlying problem which was a loss in power when warm anyway so car's booked in Wednesday now to be seen to. Until then I'll have to potter around very sedatly. Link to comment Share on other sites More sharing options...
loftusroad Posted March 27, 2011 Report Share Posted March 27, 2011 i have exactly the same problem noise does my head in lol Link to comment Share on other sites More sharing options...
Jase25 Posted January 30, 2012 Report Share Posted January 30, 2012 does it make this noise in every gear? Link to comment Share on other sites More sharing options...
