TURBO NOISE ON MY05WRX
17 October 2006, 05:20 PM
#31
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well its when you hear the turbo spool up in the early stages it has a sort of crackling / spooling noise which then clears fine above 4000 rpm - took it to Subaru but they said it was fine and the guy couldnt hear anything!
10 July 2007, 06:14 PM
#34
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Mine used to sometimes make a noise on spool up - a kind of tinkling. Reminds me of the sound of "pinking" but I wouldnt have said it was loud enough to hear from outside.
Did it on optimax/tesco99/SUL but never noticed it in town - only foot down hard on open road.
Havent noticed it lately (or my ears have tuned it out)
(Std 05 WRX)
Did it on optimax/tesco99/SUL but never noticed it in town - only foot down hard on open road.
Havent noticed it lately (or my ears have tuned it out)
(Std 05 WRX)
My car is a MY07 WRX that's done 800 miles.
The 1st 2 tanks of fuel where RON95, and since using RON97 I reckon the noise level is reduced but is unfortunately still present.
From checking a couple of 'noise' threads, it sounds safe enough to wait until the 1000mile thin for thick oil swap and mention it then.
Heatsink/solenoid/injector maybe?
10 July 2007, 06:54 PM
#35
my06 wrx has don it since day 1 and now has done 4k and still doing it.
i was told it was the wastegate on the turbo while spooling up.
correct me if ive been mis informed. ask subaru gge and they said they couldnt hear anything.
i was told it was the wastegate on the turbo while spooling up.
correct me if ive been mis informed. ask subaru gge and they said they couldnt hear anything.
11 July 2007, 05:39 PM
#36
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pretty sure this ticking noise before spool up is the wastegate opening and shutting rapidly as boost pressure is built up. It opens but because the pressure isn't there to sustain it, it shuts again and then goes back and for until pressure is built to keep it open. I've had my dealer look at it but they agreed it was probably this but couldn't do anything more with it. After research on nasioc it seems they all do it to varying degrees dpends how much it annoys you. Adjusting the wastegate arm actuator can make it better but made no difference to mine other than being able to make it worse. Subaru technical are next to useless imho, as they even told the dealer there was no adjustment on the actuator arm (true for an sti but not wrx like mine). Heres a link for info.
FAQ: Wastegate Flutter AND YOU! - Newbies & FAQs - NASIOC
ticking sound before boost - 06 wrx? - Factory 2.5L Turbo Powertrain - NASIOC
FAQ: Wastegate Flutter AND YOU! - Newbies & FAQs - NASIOC
ticking sound before boost - 06 wrx? - Factory 2.5L Turbo Powertrain - NASIOC
Last edited by sandycam; 11 July 2007 at 05:41 PM.
14 July 2007, 05:18 PM
#39
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Mentioned @ the service.
No noise heard by them.
To be fair, it had almost gone away by the time I'd got it there, so maybe it's now clearing up a bit when warm.
And judging by the time entered on the incoice the car wouldn't have cooled down much for the service.
It looks like they charged me for a litre of top up oil that I can't even find!?*
*- found back @ dealer
No noise heard by them.
To be fair, it had almost gone away by the time I'd got it there, so maybe it's now clearing up a bit when warm.
And judging by the time entered on the incoice the car wouldn't have cooled down much for the service.
It looks like they charged me for a litre of top up oil that I can't even find!?*
*- found back @ dealer
Last edited by Kevenh; 16 July 2007 at 12:03 PM. Reason: clarity, and update
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