vanko25 70 Report post Posted March 20, 2017 Hi all, I noticed over the weekend that there is a whining noise coming from the engine bay and it increases with RPM no matter on idle or under load. It is like a supercharger noise and is quite obvious around 3000rpm. Engine is stock except the HKS drop in filter. I could try putting back the original filter in but I am more keen it is not that. Anyone experienced that before? Thanks in advance! P.S. Engine power is not affected at all. Will try to get video uploaded soon. Share this post Link to post Share on other sites
TTR 509 Report post Posted March 20, 2017 Possibly the girlfriend? 5 Ztox, Paul, SimonB95 and 2 others reacted to this Share this post Link to post Share on other sites
Mark-in-Stoke 488 Report post Posted March 20, 2017 an air leak coming from the filter? Has the sound only appeared since fitting your new filter? Share this post Link to post Share on other sites
rob275 1817 Report post Posted March 20, 2017 I'm probably not the best gauge as I have a supercharger but I think I know what noise it is and I have it too I think. Though the car hasn't broken yet so it can't be urgent. 2 Mark-in-Stoke and vanko25 reacted to this Share this post Link to post Share on other sites
vanko25 70 Report post Posted March 20, 2017 @Mark-in-Stoke been driving the filter for 3k miles but just noticed it while waiting in cue inside multi storey parking. Will try putting the stock filter on the weekend but sound more like a bearing noise rather than air leak as it is constant with RPM. If I hold it at certain RPM on idle the noise is still there. @Rob I will probably ask RRG to look at it when it's due for service in Aug/September and have just keep having fun. Share this post Link to post Share on other sites
Paul 442 Report post Posted March 20, 2017 48 minutes ago, TTR said: Possibly the girlfriend? Share this post Link to post Share on other sites
vanko25 70 Report post Posted March 20, 2017 Haha I got immune to these a while ago. Share this post Link to post Share on other sites
Tareim 343 Report post Posted March 20, 2017 are you definitely sure the noise is in the engine bay and is it definitely increasing with rpm or is it actually increasing with your speed? I only ask these questions as I had an issue like that which turned out to be the diff bearing as the oil level was low (previous owner had changed the final drive back before selling and didn't fill it up enough) Share this post Link to post Share on other sites
vanko25 70 Report post Posted March 21, 2017 Yeah @Tareim it does it at standstill in neutral. On the road is not that noticeable because of the road noise and exhaust but when I park rev it in a multi story it the noise is quite noticeable. Share this post Link to post Share on other sites
nikndel 509 Report post Posted March 21, 2017 Can you drop the belt off might narrow it down to alternator , tensioner etc? Share this post Link to post Share on other sites
vanko25 70 Report post Posted March 21, 2017 Good idea Nick. Will try it over the weekend! Thanks! Share this post Link to post Share on other sites
nikndel 509 Report post Posted March 21, 2017 Don't run it too long not sure if water pump runs off same belt Share this post Link to post Share on other sites
vanko25 70 Report post Posted March 21, 2017 Yes. Water is on the same belt. I will do it on a cold engine in the morning. Don't want to run it w/o alternator too. I am still on the original Panasonic battery. Share this post Link to post Share on other sites
vanko25 70 Report post Posted March 21, 2017 Here is a video of what the noise is. It can be heard when I get my foot off the throttle. SC like Share this post Link to post Share on other sites
Lauren 2259 Report post Posted March 21, 2017 I haven't got the best ears, but it sounds totally normal to me. Share this post Link to post Share on other sites
vanko25 70 Report post Posted March 21, 2017 There is a turbine kind of noise when I get my foot off the throttle, Lauren. Anyway I will check the air filter box for leaks and also will remove the fan belt to make sure is not pump or alternator. Will update when check stuff on Friday. Hope I don't need to leave it with a dealer cuz I am kind of attached to it. Share this post Link to post Share on other sites
Church 209 Report post Posted March 21, 2017 Turbine kind of noise when off throttle? My guess is that it comes via sound generator passing inside intake noise when it's vacuuming. Try plugging out it's hole in cabin using "free" cig lighter plug from glovebox for quick test. Was there on mine when it was completely stock and made even more pronounced with changing to sound generator insert with less foam filling in it. Share this post Link to post Share on other sites
tom95 0 Report post Posted September 13, 2017 What was the outcome of this? Having the same noise now. Share this post Link to post Share on other sites