ardasaliah Posted March 19, 2007 Share Posted March 19, 2007 Deathwine!! - A known turbo problem caused by failure of the 2nd turbo, or in few cases 1st turbo too http://www.mkiv.com/techarticles/index.html#documented Does it sound like the sound clip on top pf this page? Quote Link to comment Share on other sites More sharing options...
VIL Posted March 19, 2007 Share Posted March 19, 2007 I dont think its the `death whine` as I have Jspec ceramic turbos, and they tend to just detonate rather than whine. Plus its a different noise. I`m not sure if the cold weather plays a part in it, I have never taken much notice, but am sure I had it in the summer as well. I cant work it out. But it might be worth seeing if we have any similarities in our vehicle set ups, I have: 93 TT Auto HKS (green mushroom) air filter Standard J-spec turbos Standard BOV Standard I/C setup and hoses Both cats still fitted Stainless steel cat back system ???????? Quote Link to comment Share on other sites More sharing options...
mikeyb10supra Posted March 19, 2007 Share Posted March 19, 2007 I`m not sure if the cold weather plays a part in it, I have never taken much notice, but am sure I had it in the summer as well. Please dont take this as patronising, but the turbos do make a hell of a racket when spooling, more so in cooler tempratures. The open element wil make them even more so, you sure its not this Quote Link to comment Share on other sites More sharing options...
Lukeyboy2k Posted March 19, 2007 Share Posted March 19, 2007 I cant work it out. But it might be worth seeing if we have any similarities in our vehicle set ups ???????? I have a completely standard '93 j-spec. I use it as a daily driver and have had it since last summer. I started witnessing the same sound about 2 months ago (cold weather, car running for less than 10mins). Nowadays I drive like an old woman in a micra (i.e no boost whatsoever) until my car really warms up. I don't hear the sound very often anymore - hopefully everything is ok. My knowledge of these matters is very little so I'll get it looked at soon. Quote Link to comment Share on other sites More sharing options...
VIL Posted March 19, 2007 Share Posted March 19, 2007 Please dont take this as patronising, but the turbos do make a hell of a racket when spooling, more so in cooler tempratures. The open element wil make them even more so, you sure its not this Thanks, its not patronising at all (when it comes to the turbos im a dullard ) But I have had my supra for nearly 5 years and its only really started happening in the last year. Equally, it does not seem to be getting any worse to when it first started? As an example I drove from Reading to Norfolk on Sunday. Chilly, yes, but not freezing cold. Lets say from standstill I pull away, the first turbo starts to come in and (not always) you get the 'wooooooing' for about a second or two, then as it continues to spool up it stops immediately? It also happens at higher speeds, for example I can also be doing 60mph and if I accelerate to bring the turbos in..... same thing! Quote Link to comment Share on other sites More sharing options...
SKI Posted April 29, 2007 Share Posted April 29, 2007 I have the same, but only on cold mornings, once she's hot it stops (even after I swapped over to technics hybrids still the same), I thought it might be some type of resonance in the intake until the car gets hot. Quote Link to comment Share on other sites More sharing options...
MarkR Posted April 30, 2007 Share Posted April 30, 2007 I thought it could be resonance in my airfilter (Blitz SUS) and had it for ages... come to think of it, since i've changed my BOV to a SSQV it seems to have stopped, but it could just be that it's summer... I give up Quote Link to comment Share on other sites More sharing options...
MarkR Posted April 30, 2007 Share Posted April 30, 2007 Mine happens on spool up of the first turbo (sounds like your blowing across the top of a beer bottle). The odd thing is that once it starts to make the noise you can hold the sound by not accelerating or de-celerating. But once you do either the noise stops immediately? This is me exactly... definitely only when cold. I still think it's a resonant frequency in the airfilter, but i've been wrong before. Mine is usually around 2800-3000 revs, and if i keep the revs constant i can keep the woooooo'ing... like i said before though, i haven't noticed it in a while, but you get so used to the noises it might be there and i'm just blocking it out Quote Link to comment Share on other sites More sharing options...
DamanC Posted April 30, 2007 Share Posted April 30, 2007 Bah, i knew that was coming I had this noise for ages, was the bov, changed it and ive never had it again. so i dont know then Do you know what, thinking about it, i had this. Didnt realise til now thou Quote Link to comment Share on other sites More sharing options...
Bob Posted April 30, 2007 Share Posted April 30, 2007 I used to have the 'whooooooooing', but it disappeared after I changed all the gaskets on the upper turbo pipework - some of them were in a particularly bad state. Quote Link to comment Share on other sites More sharing options...
VIL Posted April 30, 2007 Share Posted April 30, 2007 Mine does it hot, cold, sunny, or wet.....makes no difference. Quote Link to comment Share on other sites More sharing options...
Ric Posted April 30, 2007 Share Posted April 30, 2007 Mine does it hot, cold, sunny, or wet.....makes no difference. stock bov, how many times have i said it :/ Quote Link to comment Share on other sites More sharing options...
SKI Posted April 30, 2007 Share Posted April 30, 2007 I think the technical term is "Moooooooosing" I'd love to bin my stock bov, but I'm running a UK spec. Is there anyway around the MAF, then I can get a nice HKS. Quote Link to comment Share on other sites More sharing options...
VIL Posted April 30, 2007 Share Posted April 30, 2007 Ric, I would agree if I had not already changed the stock BOV and the hoses. Made absolutely no difference!!!!!! Quote Link to comment Share on other sites More sharing options...
Ric Posted April 30, 2007 Share Posted April 30, 2007 u changed it for another stock bov though? i had 3 stock bovs make the same noise, went aftermarket and stopped, not heard it since the only other thing is a bad gasket on the reed valve Quote Link to comment Share on other sites More sharing options...
VIL Posted April 30, 2007 Share Posted April 30, 2007 Cheers Ric.....I guess I will have to get an `aftermarket` BOV to eliminate this. Out of interest, appart from the annoying `WWwooooo` is it having any other detrimental effect on the car? Quote Link to comment Share on other sites More sharing options...
BarnyB Posted May 1, 2007 Share Posted May 1, 2007 My bog standard 1993 j-spec has been doing this quite loudly for over two years now, mainly when going up hills or under moderate acceleration on the flat. Will be fitting a new stock BOV in the next week or two so it might stop then. (I actually quite like the sound though). Quote Link to comment Share on other sites More sharing options...
RedM Posted May 1, 2007 Share Posted May 1, 2007 I disagree with the BOV verdict. I notice this sound only when it is cold out. Usually after being parked up overnight. It stops when the engine is warm and all summer long! If the BOV was at fault then it would be present all year, would it not. I believe it is to do with a resonance within the intake system and/or heating. Quote Link to comment Share on other sites More sharing options...
Bob Posted May 1, 2007 Share Posted May 1, 2007 Mine was definitely not down to the BOV, as I continued using the same one until recently. Quote Link to comment Share on other sites More sharing options...
Ben-san Posted May 1, 2007 Share Posted May 1, 2007 I remember searching about the same sound ages ago, and also found that it was called 'moosing' or 'wolfing'. It has been discussed before somewhere, if not here then on mkiv.com I did have the same problem when I first got the car, though it hasn't happened again since. It was also dismissed at the time as resonance. Quote Link to comment Share on other sites More sharing options...
pistonbroke Posted May 2, 2007 Share Posted May 2, 2007 I've just read throught this entire post and summise that its induction related, have you all changed your airfilters recently? Someone mentioned having a HKS mushroom filter, first off, get rid, they are shite, they disintergrate and end up flying into your turbo. Quote Link to comment Share on other sites More sharing options...
BarnyB Posted May 8, 2007 Share Posted May 8, 2007 Put the new BOV on yesterday and the sound has now dissapeared. Quote Link to comment Share on other sites More sharing options...
djskeme Posted June 29, 2007 Share Posted June 29, 2007 sorry to open this up again, i also think its induction related, I changed to an apexi induction kit, and its only happened since then, all the symptoms as described through the whole thread, i listened to the sound clip from mkiv.com, which does sound very similar, but it doesnt do it as loud, and doesnt do it on every gear change just now and then....i never even boost when the engine is cold, so its not when its cold....but defo when accelerating up through the first turbo...from maybe 40....thats my most common case! Oh well....just have to live with it...better off sorting the annoying squeel from my brakes! Quote Link to comment Share on other sites More sharing options...
MarkR Posted June 29, 2007 Share Posted June 29, 2007 Mines gone since changing BOV Quote Link to comment Share on other sites More sharing options...
RedM Posted June 29, 2007 Share Posted June 29, 2007 Mine cleared up as the weather got warmer. Quote Link to comment Share on other sites More sharing options...
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