|07-18-2011, 03:31 PM||#1|
Join Date: Nov 2003
Location: Seattle, WAVehicle:
2002 Stg.2 WRX Wagon
02 WRX boost oscillation
Just noticed this today on my car. Not sure how long it's been doing it, since I've not changed anything mechanical on the car for a long time (years) and don't usually stare at the boost gauge when driving. Been running S2/DP/UP for many years as well.
- '02 WRX ~60K miles
- Cobb DP
- STI UP
- Accessport (v1) stage 2 91oct (basemap)
- SAMCO IC hoses
It matches the symptoms in this thread pretty well - between 1.2 bar and 0.8 bar, ~1 hz oscillation.
Most obvious foot-on-floor in 4th or 5th at around 3k RPM.
Some similar discussion in this thread over in 2.0, but nobody seemed to figure out the cause.
Interestingly today on my short drive to work, didn't repro. Yesterday it was 100% repro in 4/5th during a long(er) freeway drive.
( edit - only mechanical thing done in the last ~6mo was the cold-weather-smell TSB (which the dealer messed up by leaving the PCV hose disconnected) and an ABS ECU replacment )
* Registered users of the site do not see these ads.
|Thread||Thread Starter||Forum||Replies||Last Post|
|02 WRX boost cut out||hosl380||Factory 2.0L Turbo Powertrain||3||05-19-2009 11:29 PM|
|WTB: Stock 02 WRX Boost solenoid or GM solenoid...||djdolby||SCIC Private Classifieds||0||04-04-2009 03:27 PM|
|02 WRX Boost/Sluggish Problems.Help!||streetsoldier59||Factory 2.0L Turbo Powertrain||13||11-22-2008 08:57 AM|
|02 wrx boost problem!!!||awdxthexartxofxwar||Newbies & FAQs||8||07-14-2008 07:34 AM|
|Stock 02 WRX boost pressure||DSMtuner||Factory 2.0L Turbo Powertrain||17||01-11-2005 09:46 AM|