Slight Droning Noise at 1800/1900 RPM

**WeDesign** · 23rd January 2013, 16:26

If this is Turbo related is there any checks that can be done to determine it actually is it?

Dave

**Exclusive BV** · 23rd January 2013, 21:43

mate,

having thought about it, my money is on a noisy turbo bearing.

So why cant you hear it when revving in neutral/park?

that could be because there is no load and therefore the blower is not building up much boost.

**WeDesign** · 23rd January 2013, 22:25

So, if this bearing is causing the slight noise, can this bearing be replaced?

Will the turbo fail if not done and what further damage could it do?

Dave

**Exclusive BV** · 23rd January 2013, 23:16

turbos will fail eventually, but normally will whine really loud first (a lot louder than the normal boost whine) thats the time to get down the garage sharpish before it starts to break up inside

And they will blow oily smoke on startup.

I am not saying your fault is defo turbo related but aside from the gearbox, i can think what else it could be

hope you get it sorted anyway mate

**nutron** · 24th January 2013, 01:24

The standard turbo kicks in much lower, but torque should be building then. Have you replaced the DMF or clutch ever?

**Big Dave** · 24th January 2013, 02:14

The droaning noise on one of my old Vauxhalls which happened only at a certain engine revs turned out to be a worn exhaust mount under the engine. The rubber bush between the metal angle bracket on the floor pan and the exhaust bracket had perished and the vibration resonated up through the floor of the car and sounded very similar to a worn wheel bearing.