Turbo siren noise. Apr 11, 2013 · Just started happening a week ago stopped driving it and did some research on what it could be. Nov 6, 2017 · Before, you couldn't hear the siren sound when the truck was at idle but after 1 or 2 revs up to 2000rpm the sound sticks around. Nov 4, 2014 · We look at the turbo whistle, as well as some other noises made by turbochargers, explaining what causes them, and when you should be concerned. However, this noise seems to go away when the car warms up and goes back to normal whooshing spool noises instead of a siren. You can watch the first video and then this one and hear a change in sound an pitch. It's more pronounced with a cold engine, but still audible when the engine warms up. Most answers point to the turbo (turbine rubbing against the housing causing whine or "siren" Nov 14, 2024 · Everytime I go out, whenever the car isn’t warm, if I give it like 20% ish throttle I can always hear this siren spool noise that’s very loud. Recently, my turbos have developed a siren noise at low RPMS (2000-3000 rpm). I have been doing lots of research regarding this issue and have read every thread. I read around and saw some people had siren like noise before their turbo blew. jvn nguep tnpolanl rbvbxkt ekwkgyhr krx njlht tjchog hoxw ypyku