TD04 wastegate issues
04-26-2012 | 08:53 PM
#1
Thread Starter
Registered User
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Posts: 7,224
From: SF Bay Area - Peninsula
Car Info: 04 psm wrx sedan
TD04 wastegate issues
hey all sorry about the below posts they were typed quickly from my phone in another thread, but ive been having a problem with my 04 wrx
relevant mods are
sti uppipe
perrin ic hoses
catback
cobb ap stage 1
stock td04
forged pistons/acl bearings in otherwise stock 2.0 with 10k miles
CLIFFS:
wastegate issue that starts in 5th gear on freeway (wastegate duty 0% and no more than 6psi boost), resetting ecu with AP fixes problem but comes back again
please feel free to ask any questions to clarify what i said above, sorry for the crappy typing haha
TIA
relevant mods are
sti uppipe
perrin ic hoses
catback
cobb ap stage 1
stock td04
forged pistons/acl bearings in otherwise stock 2.0 with 10k miles
Somethings wrong with my car...in any gear right around 3k when I'm supposed to hit boost the car feels like the clutch is slipping but its not that...I hear the turbo build up boost but nothing happens and then I hear the turbo spooling back up
My exhaust note sounds consistent through the rpms so i dont think its the motor but the turbo is stalling/hiccuping it seems and its boosting one second than gone the next
happened first on the freeway this morning in 5th gear, and happened in all other gears until i pulled over reset ecu with AP and it was gone the whole day, drove around sf with no problems til I just got back on the freeway where it happened again in 5th gear and then in the others back off the freeway
No cel either...only one I've gotten is 1312 for no egt sensor in catless sti uppipe but that hasn't popped up in a while
My exhaust note sounds consistent through the rpms so i dont think its the motor but the turbo is stalling/hiccuping it seems and its boosting one second than gone the next
happened first on the freeway this morning in 5th gear, and happened in all other gears until i pulled over reset ecu with AP and it was gone the whole day, drove around sf with no problems til I just got back on the freeway where it happened again in 5th gear and then in the others back off the freeway
No cel either...only one I've gotten is 1312 for no egt sensor in catless sti uppipe but that hasn't popped up in a while
Logged boost with the ap...not more than 6psi at wot in 2 4 and 5...checked wastegate duty and it was 0% the whole time
Not smelling or burning oil...my turbo oil feed line leaks a little but thats it
Not smelling or burning oil...my turbo oil feed line leaks a little but thats it
Update..so I reflashed my ecu again, and drove from hmb-santa cruz with no problems...made up to 10.6psi which is still low but better since i wasnt WOT...no stalling/hiccup and wastgate duty functioning properly
Super weird but it happened on 280n this morning and 280s this afternoon between 101-19th ave
That stretch of road is very grooved and vibrates a lot but no idea what effect thatll have on my wastegate function, or why resetting my ecu fixes it
Super weird but it happened on 280n this morning and 280s this afternoon between 101-19th ave
That stretch of road is very grooved and vibrates a lot but no idea what effect thatll have on my wastegate function, or why resetting my ecu fixes it
CLIFFS:
wastegate issue that starts in 5th gear on freeway (wastegate duty 0% and no more than 6psi boost), resetting ecu with AP fixes problem but comes back again
please feel free to ask any questions to clarify what i said above, sorry for the crappy typing haha
TIA
Last edited by slugrx; 04-26-2012 at 08:55 PM.
04-27-2012 | 08:42 AM
#4
Thread Starter
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iTrader: (12)
Joined: Apr 2008
Posts: 7,224
From: SF Bay Area - Peninsula
Car Info: 04 psm wrx sedan
Haven't touched anything...drove this morning from santa cruz-hmb over 92 with not one issue, as soon as I get onto 280n it starts happening again wtf is this...280 stops my wastegate from functioning!
04-27-2012 | 10:04 AM
#5
Thread Starter
Registered User
iTrader: (12)
Joined: Apr 2008
Posts: 7,224
From: SF Bay Area - Peninsula
Car Info: 04 psm wrx sedan
update again
advanced dynamic multiplier log starts at 12, and after a 2-3 pull onto the freeway its at 8 and after a few 70-80-70-80 5th gear accelerations the number is down to 1
paul (fw) thinks my ecu is detecting knock and killing my boost
advanced dynamic multiplier log starts at 12, and after a 2-3 pull onto the freeway its at 8 and after a few 70-80-70-80 5th gear accelerations the number is down to 1
paul (fw) thinks my ecu is detecting knock and killing my boost
04-27-2012 | 10:07 AM
#6
General Pimpin'
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Joined: May 2003
Posts: 23,019
From: Knee deep in beer. subabrew crew, ca.
Car Info: MY04 aspen wrx wagon.
Stop by mike's today until you can get out to see paul. Knock is not what you want on that motor man. You've been through too much crap with it already.
dibs on your tranny.... to soon?
good luck man. I know this car has put you through the ringer. Seems some of them are just cursed man. Reminds me of Jeff's devil wagon.
04-27-2012 | 10:10 AM
#7
Thread Starter
Registered User
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Joined: Apr 2008
Posts: 7,224
From: SF Bay Area - Peninsula
Car Info: 04 psm wrx sedan
hmmmm.... no bueno... do as I say.
Stop by mike's today until you can get out to see paul. Knock is not what you want on that motor man. You've been through too much crap with it already.
dibs on your tranny.... to soon?
good luck man. I know this car has put you through the ringer. Seems some of them are just cursed man. Reminds me of Jeff's devil wagon.
Stop by mike's today until you can get out to see paul. Knock is not what you want on that motor man. You've been through too much crap with it already.
dibs on your tranny.... to soon?
good luck man. I know this car has put you through the ringer. Seems some of them are just cursed man. Reminds me of Jeff's devil wagon.
guess im lucky he just upgraded his old legacy for a 2012 legacy 3.6r fully loaded haha i dont mind driving that for a while
04-27-2012 | 10:11 AM
#8
Thread Starter
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From: SF Bay Area - Peninsula
Car Info: 04 psm wrx sedan
oh and my 4th gear synchro is starting to crunch and ive got baad clutch chatter when its cold out and my car hasnt warmed up yet
its funny cuz i had no problems with the car 60-100k until my radiator popped and then its been all downhill it seems
its funny cuz i had no problems with the car 60-100k until my radiator popped and then its been all downhill it seems
04-27-2012 | 10:38 AM
#9
previously known as wrxBRAH
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Posts: 3,383
From: San Jose / Campbell
Car Info: 2004 FXT
If your IAM is dropping that much, have you seen what your feedback knock looks like?
Mine was doing something similar when I had air leaks in the stock inlet although my boost wasnt affected. My IAM would go to 16 after resetting ECU and then slowly come back down to 8 or lower. Sometimes without even registering any feedback knock.
Mine was doing something similar when I had air leaks in the stock inlet although my boost wasnt affected. My IAM would go to 16 after resetting ECU and then slowly come back down to 8 or lower. Sometimes without even registering any feedback knock.
04-27-2012 | 10:45 AM
#10
Thread Starter
Registered User
iTrader: (12)
Joined: Apr 2008
Posts: 7,224
From: SF Bay Area - Peninsula
Car Info: 04 psm wrx sedan
If your IAM is dropping that much, have you seen what your feedback knock looks like?
Mine was doing something similar when I had air leaks in the stock inlet although my boost wasnt affected. My IAM would go to 16 after resetting ECU and then slowly come back down to 8 or lower. Sometimes without even registering any feedback knock.
Mine was doing something similar when I had air leaks in the stock inlet although my boost wasnt affected. My IAM would go to 16 after resetting ECU and then slowly come back down to 8 or lower. Sometimes without even registering any feedback knock.
