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Old 06-24-2015, 03:08 AM   #1
wenatcheekid
Scooby Newbie
 
Member#: 389967
Join Date: May 2014
Location: Wenatchee, WA
Vehicle:
2003 Subaru WRX
Silver

Question Weird Turbo Noise

All right NASIOC, help me out. I've got a 2003 Subaru Impreza WRX. My mods list is short, but I'll start with the problem. So every once in a while when I start to give the car some acceleration, when the boost kicks in I hear a strange click sound. Its not a continuous clicking noise, it only happens like once or twice then goes away. In sequence from a 30mph takeoff, I boost it and when it hits about 5-10psi, I'll hear one click. And about half a second to 2 seconds later I'll hear a second click. I've been searching and searching threads here and on other Subaru forums, and I can't find anything that sounds like this. People have suggested the boost solenoid, but they describe it as a continuous clicking. Its definitely not a loose heat shield. The only other thing I can fathom is possibly something in the suspension? Otherwise, the car runs great and boost hits good. Please help!

Mods list:

Invidia bellmouth downpipe
Invidia uppipe
Invidia catless 3" midpipe
STP axleback retro fitted to the Invidia stuff
Stage 2 clutch (unknown brand/previous owner)
H&R racing springs
New-ish swaybar endlinks front and rear
Open source tune, launch control, pushing 17psi max

Oh yeah, I also have 180,xxx miles on this thing lol
Thanks for any help you guys can offer
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Old 06-25-2015, 10:09 AM   #2
jkenna860
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Member#: 369375
Join Date: Sep 2013
Chapter/Region: NESIC
Location: Merrimack, New Hampshire
Vehicle:
2002 subaru wrx
sedona red

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Try checking your wastegate actuator arm possibly? I have a high mileage bugeye as well and the reason why I suggest this is because when I was doing a pull getting off a toll, the arm slipped off the wastegate actuator, and I sometimes herd the noise you are describing before it happened. Thought the turbo was trashed, but I put it back on with a new c clip and its on nice and tight again. Oh try greasing the arm that comes from the solenoid that may help too. Hope this helps!

-Jon
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Old 06-26-2015, 03:21 AM   #3
wenatcheekid
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Member#: 389967
Join Date: May 2014
Location: Wenatchee, WA
Vehicle:
2003 Subaru WRX
Silver

Question

Quote:
Originally Posted by jkenna860 View Post
... the arm slipped off the wastegate actuator, and I sometimes herd the noise you are describing before it happened. Thought the turbo was trashed, but I put it back on with a new c clip and its on nice and tight again. Oh try greasing the arm that comes from the solenoid that may help too. Hope this helps!

-Jon
Hey Jon, thanks for the tip. I checked everything out on my wastegate assembly and it doesn't look too bad besides the fact that it is all orangey-brown lol a new c clip probably wouldn't hurt. There's a pic below of my wastegate actuator. And as for the arm that comes from the solenoid, which one would that be? Could you possibly send me a pic of it?
Thanks a million!

-Tyler

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Old 06-28-2015, 06:03 PM   #4
jkenna860
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Member#: 369375
Join Date: Sep 2013
Chapter/Region: NESIC
Location: Merrimack, New Hampshire
Vehicle:
2002 subaru wrx
sedona red

Default

Your pic doesn't work! Lol ill take some pics and get back to you later tonight. As long as there is no play on where the arm for the wastegate door connects does not have any play. If your arm is good, you could try dropping the downpipe and wiggling the turbine wheel up and down/in and out to see how much play it has. May as well wire wheel all the bolts and anti-seize them too! Along with a new gasket of course. Anyway ill get back to you soon!

-Jon
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