06 WRX falls on face at 3000-4500 rpm
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This is a discussion on 06 WRX falls on face at 3000-4500 rpm within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; Ok as title states it i just got my 06 WRX Friday with 106k miles and supposed to be 100% ...

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    06 WRX falls on face at 3000-4500 rpm

    Ok as title states it i just got my 06 WRX Friday with 106k miles and supposed to be 100% stock. I was on my way home and hit the gas and it pulled great until 3000rpm-4500rpm. It was like it fell on its face then got life and shot off like a rocket again. It runs and drives great the code it is throwing is an o2 sensor so not sure if that can cause that or now im coming over from DSM so this is literally all new to me. I did have a guy around here that knows a little about WRX and STi. He said he belives it was at one time not stock. The clutch is already not stock according to him because it is a pretty stiff strong clutch to push in. He belives it used to have a tune on it possibly a stage 2 and the previous owner attempted to revert it back to 100% stock and the stock tune didnt take well and it messed up my fuel maps. So what i was planning on doing is to get a Cobb tuner for it and tune it and all to see if that will fix it. But i would like to start cheap right now so would plugs and a fuel filter be a good idea to do first or just go strait to the Cobb? Thanks for any help guys. I dont have much time to worth on it i have to report to Ft. Carson in a couple days and dont want to have a jacked up WRX when i get there.

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    He simply abides. SD_GR's Avatar
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    Post the actual code #.

    Do the timing belt soon.

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    Ill try to get that code tomorrow. I was going to do the T-Belt when i get to Ft. Carson and to a full tune up on it.

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    Do you have any way to find out what was previously done to the car?
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    no possible way to figure out. Im going to get the code pulled now for it.

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    The codes that was pulled was P0171 and P2096

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    He simply abides. SD_GR's Avatar
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    For that code combo do this:
    Bank 1 Lean ...help
    and also suspect exhaust gas leak.
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    I checked the air filter and its pretty dirty so im thinking the MAF might be dirty as well. But would that cause the problem i am having?

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    P0171 CEL Thread - Everything you ever wanted to know? - NASIOC

    The P2096 is what is coming up for me continuously as well. I reset the ECU, and it stays gone for 300-400 miles, then comes back again, usually during highway cruising. I need to spend more time troubleshooting it myself.
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    Thats what mine does to goes away after reset go couple hundred miles comes on.

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    Pro Manscaper Mikie13's Avatar
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    Quote Originally Posted by WRX19k View Post
    Thats what mine does to goes away after reset go couple hundred miles comes on.
    Well I'll let you do the research and figure out what's wrong...cause everytime I pop the battery and reset the ECU, I can no longer troubleshoot

    I think this weekend I'm gonna get into the intake side of things though and see if I have a pre-turbo leak. Also going to clean the MAF and see if that helps. Start simple before an all out replacement of the O2 sensor.
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    I cleaned my air filter out and it helped it out some. Now i am going to clean the Maf next.

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    Quote Originally Posted by WRX19k View Post
    He belives it used to have a tune on it possibly a stage 2 and the previous owner attempted to revert it back to 100% stock and the stock tune didnt take well and it messed up my fuel maps.
    Doesn't work like that. Either the ECU is 100% reflashed with a ROM or it isn't. You are going to need to find out what mods it has in order to really track down the issue. The P2096 is the rear O2 sensor reporting a lean condition as well.
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    Quote Originally Posted by Donkey View Post
    Doesn't work like that. Either the ECU is 100% reflashed with a ROM or it isn't. You are going to need to find out what mods it has in order to really track down the issue. The P2096 is the rear O2 sensor reporting a lean condition as well.
    I got the Cobb tuner for it and it falls on its face worse now.

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    and the Funky Bunch Calvinball's Avatar
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    Quote Originally Posted by WRX19k View Post
    I got the Cobb tuner for it and it falls on its face worse now.
    You really need to figure out what modifications are done to the car before you just keep throwing random tunes at it. Post up some pictures of the engine bay from different angles, and of the exhaust. Make sure one of the engine bay angles is from the passenger side looking at the turbo and downpipe.
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