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Old 05-18-2015, 02:46 PM   #1
ryan2949
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Join Date: Jul 2014
Chapter/Region: E. Canada
Location: Sudbury, Ontario
Vehicle:
2002 WRX
WRB

Default Weird wastegate noise

Occasionally my wastegate makes a funny high pitched noise instead of an air sound. Usually once the cars driven hard it starts to make this noise afterwards. The car boosts to normal levels but I believe it's slow to make boost. Could it be the wastegate or actuator? Stock tdo4 with 250,000kms on it.

https://www.youtube.com/watch?v=Ong9...ature=youtu.be
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Old 05-18-2015, 04:15 PM   #2
mazdaboi
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Member#: 281797
Join Date: May 2011
Chapter/Region: MAIC
Location: Stafford, VA
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2002 WRX
EVO Graphite Gray

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whats your mods?
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Old 05-18-2015, 10:09 PM   #3
ryan2949
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2002 WRX
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3 inch catted downpipe, 3 inch exhaust, light weight flywheel. Everything is stock in the engine bay.
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Old 05-18-2015, 10:40 PM   #4
Uncle Scotty
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oh w0w.....is it actually the wastegate

or is the the bpv or is it the throckmortons trinkle valve actuating assembly support spring matrix actuator?

or do you even have any sort of clue in hell???
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Old 05-18-2015, 10:41 PM   #5
Uncle Scotty
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id bet the bpv or bov is leaking or bad
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Old 05-19-2015, 09:39 AM   #6
ryan2949
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Location: Sudbury, Ontario
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WRB

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I was thinking of getting the Cobb bpv and go from there.
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Old 05-19-2015, 05:01 PM   #7
tebriel
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Sedan and Wagon

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Why do you think it's the wastegate?
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Old 05-19-2015, 10:01 PM   #8
ryan2949
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WRB

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Under boost my car makes a wind type noise under boost. But occasionally it makes a higher pitched unnatural sound. Its difficult to explajn
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Old 05-25-2015, 03:43 PM   #9
ShayGt
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hard to diagnose without hearing it, but probably a bov leak.
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Old 08-18-2015, 11:29 PM   #10
ryan2949
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Just to update this. I found the issue when replacing my PCV valve. When I bought my car the previous owner had the clutch replaced. As soon as I drove the car home that day, an intercooler hose blew off(the one tha goes from turbo to intercooler) and he assumed when they did the clutch, they didn't tighten it. So anyways, fast foward a year and when replacing the PCV valve(two weeks ago), when taking the intercooler off I found out the one intercooler pipe beneath the intercooler was completely loose and I had blow by where oil was blowing through that section. Once I tightened that and changed the PCV the sound disappeared.
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Old 08-19-2015, 10:16 AM   #11
danger1138
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04 rex luger!

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That was the most unnecessary jangled info of how you solved your issue.
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Old 08-20-2015, 04:04 AM   #12
ryan2949
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Location: Sudbury, Ontario
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WRB

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Yeah, my bad aha.

When replacing PCV, found one of the intercooler hose clamps was completely loose. Once it was tightened, the sound disappeared.
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