Liameglanzav Posted December 14, 2014 Share Posted December 14, 2014 Hi guys I'm new hear but after some help.I have a 98 spec glanza v which is making a high pitched whistle when at high revs, like above 5000rpm. I fault it might of been my dump valve leaking under boost but I have removed that and I'm still getting the same noise. The car is compleatly standard engine wise and still pulls strong all the way through the revs but its just annoying hearing it. If anyone can shine some light on what thus noise might b I would be muchly greatfull. Cheers, Liam. Quote Link to post Share on other sites
rwdrev Posted December 14, 2014 Share Posted December 14, 2014 check intercooler pipes for any cracks or loose connections. Quote Link to post Share on other sites
Sefton-EP91 Posted December 14, 2014 Share Posted December 14, 2014 My guess would be turbo to exhaust manifold bolts have worked loose causing the whistle. Had the same problem on mine! Hope this helps mate Quote Link to post Share on other sites
Calum122 Posted December 14, 2014 Share Posted December 14, 2014 Welcome dude. I'm no expert but when my brothers Punto GT Turbo made this noise it was because the turbo was starting to fail. Are you noticing any smoke on boost? Quote Link to post Share on other sites
5e colin Posted December 14, 2014 Share Posted December 14, 2014 cracked manifold maybie Quote Link to post Share on other sites
Liam_D Posted December 14, 2014 Share Posted December 14, 2014 Would defiantly check it for boost leaks first, failing that it could be an overspun turbo. Quote Link to post Share on other sites
mikey4410 Posted December 14, 2014 Share Posted December 14, 2014 as above.i reckon boost leak or similar Quote Link to post Share on other sites
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