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Old 04-21-2009, 02:59 PM   #1
Cybergeist
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Default 02 Fairly stock WRX NO Boost

Greetings and salutations All,

As you can read from the post's title, Im experiencing zero boost from my 02 WRX 4EAT. Now I know this topic has been pretty much beaten to death but reading all the forums and self-help guides are giving me a real migraine. By the way I'm quite a noob to this stuff.

My car is fairly stock with a Megan Racing TBE and a Cobb Accessport V1 running Stage 2, though I did have a GReddy RS recirc BOV on for a period but later replaced it with the stock BPV.

I checked for various leaks in my hoses but could only find that my hoses from the wastegate solenoid to the T-fit and the adjacent hoses to the wastegate and turbo inlet were dry rotted. I replaced those to no avail. (exception being the pill) I also tried cleaning out the wastegate solenoid with the non-chlorinated brake cleaner and ran it to battery to make sure it 'clicks' which it did.

So now Im a bit stumped with holding off the more costly mechanic job as Im hoping to being able to troubleshoot this issue myself.

Side Note: I didn't see any blue smoke come from my exhaust and while this may sound odd, this would be kinda the third time happening to me but was able to correct it by pumping my brakes real hard which didnt work this time.

Additonal Side Note: My Cobb AP V1 won't pick up anyother CEL codes other than P0021 which oddly still comes on when I just recently had the oxygen sensor replaced. Though the repair shop were able to get wastegate solenoid low voltage.
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Last edited by Cybergeist; 04-21-2009 at 03:04 PM. Reason: Do what you want because a pirate is free, you are a pirate!
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Old 04-26-2009, 12:50 AM   #2
Cybergeist
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Unhappy

No love? oh and is the brake cleaner supposed to squirt back out when you test the wastegate solenoid? I hope ya'll can help me as I'm a bit down for the fact my car is slower than a Kia Rio.
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Old 04-26-2009, 01:31 PM   #3
yarrgh
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well, has any recent work been done? when did you first start noticing that you had no boost? did you take anything apart and then suddenly no boost?
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Old 04-26-2009, 06:08 PM   #4
Cybergeist
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Only recent work I had done was change out the front oxygen senor but that was after my tri-inital no boost (I'm expanding my imaginary vocabulary) which happened while I was driving. I haven't installed any new or any recent parts to my car.

Wouldn't I get some kind of psi even without the T-Fitting connected to the wastegate solenoid?
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Old 04-26-2009, 06:34 PM   #5
thompsonw101
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No boost at all? Not even 5psi? I would remove the turbo and check the compressor and exhaust housing wheels. You may have a broken shaft and or a broken wheel.
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Old 04-26-2009, 09:29 PM   #6
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Check the wastegate arm to see if the c-clip fell off. This will result in zero boost with no other symptoms.
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Old 04-26-2009, 11:38 PM   #7
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Quote:
Originally Posted by Mulder View Post
Check the wastegate arm to see if the c-clip fell off. This will result in zero boost with no other symptoms.
OOOooo will check for that on my day off
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Old 04-27-2009, 11:44 PM   #8
Cybergeist
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C-Clip is still on there, though a bit rusted so now I have to scour the forums for a turbo removal tutorial.
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Old 04-28-2009, 08:42 AM   #9
rkramer
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get a code reader and check for codes...
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Old 04-28-2009, 11:42 PM   #10
snowmants
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I had this happen to me on my 2002 wrx. Just a catback and BOV on mine. What had happened was the cat in the up-pipe had broken apart and had gotten sucked into the turbo and had jammed the fins so that the turbo didnt spool at all. Once the up-pipe was replaced and the pieces of the cat were cleaned out of the turbo all was fine. Turbo wasnt even damaged.
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Old 04-30-2009, 03:38 AM   #11
Cybergeist
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Quote:
Originally Posted by snowmants View Post
I had this happen to me on my 2002 wrx. Just a catback and BOV on mine. What had happened was the cat in the up-pipe had broken apart and had gotten sucked into the turbo and had jammed the fins so that the turbo didnt spool at all. Once the up-pipe was replaced and the pieces of the cat were cleaned out of the turbo all was fine. Turbo wasnt even damaged.
hmm definitely going to check that out when I remove the turbo next week... been looking for a reason to get off my ass and install my flex up-pipe
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Old 05-03-2009, 08:11 PM   #12
Cybergeist
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Im about to attempt to remove my turbo tomorrow, anyone have a go-to guide for turbo removal with pics? search gave me a whole lot of unproductive hits.
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Old 05-03-2009, 10:33 PM   #13
wagoneer02
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Quote:
Originally Posted by Cybergeist View Post
Im about to attempt to remove my turbo tomorrow, anyone have a go-to guide for turbo removal with pics? search gave me a whole lot of unproductive hits.

This is for a vf39 install. Either way it requires you to take the stock turbo off. So here are some directions on how to take your turbo off. Be organized. zip lock baggies with labels help. The night before, spray some type liquid wrench so the bolts come off easier, if you miss out on this step, it will prove to be much harder than you thought. anyways here is the link. if you have questions PM me, I've taken my turbo off for numerous reasons, i can walk you through it.

http://forums.nasioc.com/forums/show...vf39+swap+pics
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Old 05-04-2009, 12:10 AM   #14
Cybergeist
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cool, thx wagoneer I'll definitely pm you if I get stuck
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Old 05-04-2009, 05:30 AM   #15
aeanbrennan
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Quote:
Originally Posted by Mulder View Post
Check the wastegate arm to see if the c-clip fell off. This will result in zero boost with no other symptoms.

thats really the only thing that could cause your problem is if the actuator arm is off or something lodged in the turbo. its not like you have a massive leak youd at least hear it. if your not creating boost AT ALL. check your O2 sensor. it may have came loose. just a thought.

another thing when you put in your up pipe you have to take our mid pipe manifold. cause it will not fit downward. i have a megan up pipe and it took me a quick min to figure that out.
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Old 05-04-2009, 09:38 PM   #16
PropBoyBlu
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same thing happened to me. Drove aroud for months with little to no boost, and a car that seemed to be running rather rich. Turns out it was my MAF Sensor. 5 mins and $5 worth of cleaner=boost!
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Old 05-06-2009, 12:59 PM   #17
Cybergeist
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Quote:
Originally Posted by PropBoyBlu View Post
same thing happened to me. Drove aroud for months with little to no boost, and a car that seemed to be running rather rich. Turns out it was my MAF Sensor. 5 mins and $5 worth of cleaner=boost!
I might as well look into as right now Im attempting to pull off my turbo which Im really hoping isnt the problem but might as well be the case since my car has little over 100k.
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Old 05-06-2009, 04:06 PM   #18
Cybergeist
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ok, having a problem taking the turbo off... its kinda freeballing but something is holding it down.... and how would I go about taking off the coolant line under the turbo?
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Old 05-06-2009, 04:35 PM   #19
wagoneer02
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1. Spray PB blaster 1-2 hours before tackling bolts

2. Remove intercooler, and BPV, well leave the BPV attached to the hose just remove from intercooler

3. Remove downpipe completely, on the bellmouth section i believe 4 bolts are accesable with from the top, one maybe from the bottom, unless you have swivel sockets, which are VERY VERY helpful, if you don't have some borrow some they make life easier.

4.Remove turbo from up-pipe brackets, 3 on passenger side I believe and 2 on driver side.

5. Remove the brackets supporting the turbo, there are 2 of them, this is when those extensions come in handy, I would advise you to remove the airbox, to make it more excessable to removing the bolts

6. Pull with all your might the coolant line to the turbo,well not really, dont break it, but it is a breaded line so it takes some extra effort. Have something on the ground to catch coolant, you will lose a lot, the hoses were the hardest for me for some reason, they were just stuck on there,

7. Remove oil inlet banjo bolt, bend line to the side but not too much.

8. This is optional but i removed the coolant inlet banjos, they are 2 17mm bolts, these are where those copper washers are. DO NOT LOSE COPPER WASHERS!!

9.Pull the turbo off, put new one back in, reverse the order.

10. Pull ignition fuse (in the cabin) and crank it a couple times to prime turbo, then let idle for about 15 miuntes, check for leaks and put a smile on your face.

Here are some more threads that helped me out when I first took my turbo off.

http://forums.nasioc.com/forums/showthread.php?t=966297 (Has awesome pictures, and step by step.)


http://forums.nasioc.com/forums/showthread.php?t=658076



C/N: None! Follow the directions!

Last edited by wagoneer02; 05-06-2009 at 05:27 PM. Reason: I haz bad grammer.. so i fixxes it!
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Old 05-06-2009, 06:16 PM   #20
Cybergeist
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ok got it off, it seems like the main propeller was jammed so i moved it around and got it spinning again. Is there anything else i should check on the turbo before putting it back on?
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Old 05-06-2009, 06:41 PM   #21
wagoneer02
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Quote:
Originally Posted by Cybergeist View Post
ok got it off, it seems like the main propeller was jammed so i moved it around and got it spinning again. Is there anything else i should check on the turbo before putting it back on?
Check shaft play, wiggle the turbine in and out and side to side. That may be your problem, your turbo might be shot. If you are still weary, take it to a reputable shop and see if they can diagnose what is wrong. At this point we really can't tell what is wrong. But seeing as the propeller was jammed that would be your MAIN problem. No spin = no boost! But while it's out it wouldn't hurt to get it checked out. Maybe send it to get ported and polished
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Old 05-06-2009, 07:12 PM   #22
Cybergeist
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is it supposed to wiggle? because it doesnt
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Old 05-06-2009, 09:58 PM   #23
Mulder
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Replace the turbo. It should never tighten up or seize, once it does something is damaged. It may seem "ok" now but the same thing will eventually happen again.
Go check the classifieds, good low-mileage TD04's are available all the time in the $100-200 range.
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Old 05-06-2009, 10:15 PM   #24
wagoneer02
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Quote:
Originally Posted by Cybergeist View Post
is it supposed to wiggle? because it doesnt
Not supposed to wiggle at all. But yes as Mulder said, It seized up. It will most likely happen again.
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Old 05-07-2009, 03:27 PM   #25
Cybergeist
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well after putting it back on, the turbo is either no longer functional or there some other underlying issue that I cant think of as I'm still having the same issue of no boost..... so I guess this would be as good as anytime to save up *shakes empty piggy bank* and to upgrade and have it professionally done *queue the dancing banana*
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