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Old 06-01-2010, 02:57 PM   #1
DEALBATONY
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Member#: 245548
Join Date: Apr 2010
Chapter/Region: SWIC
Location: Phoenix
Vehicle:
2012 impreza 2.0i

Default very weird noise @ High RPM's

as of yesterday my car started making a very weird noise at high RPM's.
Theres no loss of power, stutter, hesitation or anything like that but the noise is pretty loud almost as if the were a vacuum kind of sound or something is hitting a fan. idk but this is weird and i cant even begin to look where this could come from iv'e checked for loose line n all that and everything seems to be good. Has anyone ever experienced anything like this?
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Old 06-01-2010, 03:01 PM   #2
NitroTrike
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Member#: 62408
Join Date: May 2004
Chapter/Region: South East
Location: GWR, Florida
Vehicle:
2002 wrx w/ STi guts
174k miles on Mobil 1

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A vacuum kind of sound, and something hitting a fan sounds like two totally different sounds lol. Do you mean a vacuum cleaner?

Without knowing which car you have, it's hard to start the diagnosis.
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Old 06-01-2010, 04:49 PM   #3
GrimmSpeed
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Join Date: Jan 2007
Chapter/Region: MWSOC
Location: Minneapolis, MN
Vehicle:
2020 STI, 2022 WRX

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Witha very vague guess I would say its either an up pipe leak or something with your airbox/intake/new filter? Could also be a turbo to downpipe leak. Give us a more explained noise!haha

Will
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Old 06-01-2010, 07:33 PM   #4
DEALBATONY
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Member#: 245548
Join Date: Apr 2010
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Location: Phoenix
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2012 impreza 2.0i

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well i have a 2004 wrx, i just changed the air intake..the problem still there..it sounds like something is hitting a fan and it only happens if you run the car hard at high rpm's.. today i also notice while swapping out the cai that my radiator is leaking fluid. could it be something with the radiator fans?
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Old 06-07-2010, 10:50 PM   #5
DEALBATONY
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Member#: 245548
Join Date: Apr 2010
Chapter/Region: SWIC
Location: Phoenix
Vehicle:
2012 impreza 2.0i

Default

alright so im completely lost!!!!
in the last couple of days my car has been making many different sounds and also a difference in performance..theres a vacuum sound on low rpm's under 3k..
once past 3k it start making a weird hitting fan kinda noise. its coming from near the turbo.
and as of today, i checked it out and its making a weird fan sound through all rpms.
even when in neutral if i give it gas the turbo makes the fan noise while spooling up and its very loud..

while im driving the psi levels drop extremely fast at around 5-10 psi..
keep in mind that at the beginning of all this there was no power loss, or anything weird and now theres a huge difference in performance..

i dont even know where to begin n id really hate to take it to the shop n spend an arm and a leg
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