whining

[UKG grant]

Abit of an odd one, recently, when on boost at around 10psi, im getting a whine, almost like gearbox whining except its only on boost, if i let of but maintain the speed it stops. seems to be boosting ok tho. just abit srtrage only at 10psi+ makes some noise like and air raid siron and fomr guestamating when driving it it does sound like its coming from the turbo, anyone got any ideas?

[Markey Mark (BD)]

Sounds like a boost leak to me mate, i had it once i had a hole in the pipe and the air being forced out of it caused it to make a real screeching noise. Worht checking first.

[Guybrush]

whining noise only when on boost??? you sure its not a coincidence and its a wheel bearing?

if your right, and its not speed related and only boost related then its gotta be mr. turbo saying goodbye.

also, if its more of a whistle than a whine....check your air filter for holes or the air filter pipework for splits etc, as you'll be able to hear what the turbo's doing a lot more... or it could be air escaping eg. a hole in the intercooler etc.

[UKG grant]

Turbo is fairly new, only done 3000 miles ish, il check boost pipes, is a posibility tho the noise dosent sound like it could be that the wrong tone mabie if that makes sence, i could be wrong, a split in the intercooler is a goood idea tho. have to chekck it out when its light!
cheers!

[Guybrush]

another source of whining can be in the passenger seat :laugh::laugh::laugh:

[jantheeven]

:laugh:

[tobester]

another source of whining can be in the passenger seat :laugh::laugh::laugh:

:laugh::laugh::laugh::laugh::laugh: i get that a lot:cry:

[UNICRONICUS]

Remove your turbo exhaust elbow and have a look at the area between the wastegate port and the exhaust turbine wheel, I bet there's a hairline crack. Nothing to worry about apparently, mine was cracked and made a whining noise on boost but it didn't loose performance. Apparently it's quite common for turbo's to crack in this place, even if it's new.

[Spooky]

have you looked at the compressor side of ze blower ? bent/damaged blades will cause the noise you're mentioning too...

[UKG grant]

yehh, il have a browse on the weekend! cheers guys, tho my alternater is making abit of a blowing noise on tickover, think bearngs are abit kaput, so it couls possibly be that so il check that too, cheers!