Ian B Posted January 21, 2004 Share Posted January 21, 2004 Thought I'd run this past the collective In the last few days I've noticed a very high pitched, low volume, whistle from the tintop (old P-reg Citroen 1.9D Turbo). Not noticed it before, and just concerned it mught be an early wallet warning? Was going to change it soon anyway so hope it's nothing too serious. Any ideas anyone? Ian - MI 5EVN - Slightly Vider 😬 (and not very well at all ☹️) Link to comment Share on other sites More sharing options...
Graham Perry Posted January 21, 2004 Share Posted January 21, 2004 Sounds like you might have a loose turbo pipe or a split pipe. Check all the jubilee clips that hold on the various pipes that circulate the air through the turbo. I had one work loose last year and it was only just hanging on and it was noisy. A few months later I had a clip snap and a pipe blew clean of the manifold. There was an enormous whistle and a large cloud of black smoke when that happened so I couldn't miss it Link to comment Share on other sites More sharing options...
Randy Posted January 21, 2004 Share Posted January 21, 2004 Maybe a loose hose from turbo to inlet manifold (& intercooler, if u have 1) - check hoses and clamps. Link to comment Share on other sites More sharing options...
CHRIS CLARK Posted January 21, 2004 Share Posted January 21, 2004 Hi Ian. Not just your dodgy ear giving feedback is it? I'm told you went bionic. Link to comment Share on other sites More sharing options...
Ian B Posted January 21, 2004 Author Share Posted January 21, 2004 Thanks guys, I'll try and have a look at the W/E Ian - MI 5EVN - Slightly Vider 😬 (and not very well at all ☹️) Link to comment Share on other sites More sharing options...
EFA Posted January 21, 2004 Share Posted January 21, 2004 A whistling turbo can be bad sign or can be qwuite OK. I believe that cars using conventional dump valves it is quite OK to hear the sound of the turbo. Cars whihc dump excessive boost via diverter valves however, it is normally a sign of turbo damage - bent compressor vanes or run bearings. As for your oilburning frogmobile I don't know what type of boost control it has, so cannot offer model specific advice. Link to comment Share on other sites More sharing options...
Sheds Moderator Posted January 22, 2004 Share Posted January 22, 2004 Oilburning frogmobiles in my experience have neither boost control nor any appreciable boost. Link to comment Share on other sites More sharing options...
adey Posted January 22, 2004 Share Posted January 22, 2004 In the case t'wife's 1.9D turbo, the whistling was a sign that the bearings were on the way out. Cost a canny bit to fix :( Link to comment Share on other sites More sharing options...
SteveP Posted January 22, 2004 Share Posted January 22, 2004 Colleague of mine had very similar on a Passat TDI and that turned out to be a split turbo pipe as others have already suggested. SteveP Link to comment Share on other sites More sharing options...
Ian B Posted January 24, 2004 Author Share Posted January 24, 2004 Thanks for the suggestions. It turned out to be a failing weld in the exhuast just before the Cat. This was confirmed when there was a loud clunk as the weld failed completely whilst waiting stationary in a queue for a level crossing! Still, I couldn't hear so much of the whistle after that, mostly blowing exhaust! Ian - MI 5EVN - Slightly Vider 😬 (and not very well at all ☹️) Link to comment Share on other sites More sharing options...
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