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ImportTun3r 12-25-2013 01:31 PM

Turbo not spooling anymore
Hi, I'm new to the WRX community and i'm a turbo system noob. I just bought my first 2004 WRX 2 weeks ago (my first turbo car) and recently last night the turbo stopped spooling for no reason. It was spooling yesterday morning when i was going to work, but when i left from work, that's when i noticed that i didn't hear the whistle/turbo spool anymore after work. I've read info about this and research. I checked the wastegate; e-clip was still there, I pulled it apart and pull the rod back and forth, it felt hard to move it. I've heard from people that the turbo is done and that i need to buy another turbo. Also, i forgot to mention that when i was cruising, the boost gauge showed somewhere at 10 psi and when i let go the gas pedal, it showed 25 psi, does that make sense? sorry for long post, but i like to be specific. What you guys think?

Claythrow 12-25-2013 02:38 PM

Guages can break too.

The turbo's are easy enough to get out. Is there shaft play side to side, or in & out? Does the shaft spin easily? You should be able to spin it & it will continue to spin on it's own for a second or two. Also, give the turbo a light shake near your ear...any noises?

If the turbo appears to be fine it's either a boost leak or the boost solenoid. Check all your vacuum hoses, make sure they are all zip tied or somehow secured very well. Make sure the hoses are all good, not kinked, ripped, or worn out. The IC connection must be secure, oil & coolant lines.

The boost solenoid is on the passenger side under a little black bracket. These can go too. You can either buy a new one, or you can often find them for sale from people who have upgraded to an electronic or manual. Usually $10-$20.

1. Check all hoses, connections, including exhaust.
2. Check turbo
3. Replace the boost solenoid

If you still have trouble after that come back & let us know, but those checks usually find the problem.

boo-key 12-25-2013 05:56 PM

549 Attachment(s)
Also try resetting the ecu .

ImportTun3r 12-25-2013 09:27 PM

Thanks for the reply. @Claythrow , I haven't check the turbo yet but i will tomorrow. How hard is to remove the turbo inlet? Also, where in passenger side is the boost solenoid located? is there a pic that you can show me? Thanks in advance. @Bookey bear, yes i have reset the ecu and still same issue.

Brockton 12-25-2013 09:46 PM

Idk about the older set ups, but on the 08+ its a pia to pull/install the turbo, mainly because the inlet hose.

boo-key 12-25-2013 09:55 PM

549 Attachment(s)
Correct me if im wrong someone but, wouldn't it be easier to take the dp off than the inlet to check the turbo? The bcs is behind a black metal bracket connected to the firewall. Just follow the line attached to the nipple on the compressor housing to the bcs.

pzr2874 12-26-2013 12:00 AM

I would have done a boost leak test first

from there it should give you an idea

ImportTun3r 12-26-2013 12:28 PM

Ok i've reset the ecu for 1 hour, check for vacuum leaks with soapy water and nothing, still same issue. I havent removed the inlet turbo yet cause it started snowing.

ImportTun3r 12-28-2013 06:48 PM

I've pulled the IC and hoses out to check for a leak and so far i have not found nothing. everything is tight. I was unable to pull the turbo out cause i'm limited in tools. so my guts tells me that is the turbo is gone. Any suggestions?

Brockton 12-28-2013 07:57 PM

If there was a problem with the turbo you would probably know it. If its not getting into boost you should be able to feel it without relying on a gauge. Turbo's go out mainly for three reasons. #1 is foreign debris damaging the blades. If this was the case you would hear a screeching noise when you go into boost. #2 Oil contamination causing the bearings to go/oil seals bad (blows blueish smoke from tail pipe) #3 Oil starvation

These cars have an EBCS (electronic boost control solenoid). That allows the computer to control the boost. If your EBCS goes bad you can have 0 boost. One of my buddies just had to replace the EBCS on his 05 STI a couple months ago. Its a cheaper option than a new turbo, albeit the TD04's are less than $200 used on NASIOC.

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