STI gonna DIE need HELP before i CRY
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This is a discussion on STI gonna DIE need HELP before i CRY within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; So my 04 sti is messed up. I can slam the throttle wide and it will only jump to 1500rpm! ...

  1. #1
    Registered User wrxsti04gt35r's Avatar
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    STI gonna DIE need HELP before i CRY

    So my 04 sti is messed up. I can slam the throttle wide and it will only jump to 1500rpm! and bog back down, jumps between 1500rpm and 500 popin like a snowblower. throwin codes. P0171/
    p0131 and P0031. Sounds like a bad boost leak or knock sensor to me p0171 is system too lean. Car is screwed. Can get it up to 3000rpm if i tap the throttle fast like im drifting. Took off TMIC to check inlet pipe vaccume lines boost gauge line , ect. Anyone have anymore ideas or have had this happen to them? before i take her in to the tune shop, for a bank rape? Put her back to stock When the madness started.

    04 sti Stg 2 COBB (butt dyno)/ Bosal catless exhaust/ Cobb DP.
    Last edited by wrxsti04gt35r; 12-03-2008 at 08:28 AM.
    MISUBIE.com - the michigan subaru fourm.

    Stg 2 sti 2004. COBB DP/ Bosal CLE.

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    Resident meany-rator 06wrx4me's Avatar
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    Do a compression check.
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    Registered User wrxsti04gt35r's Avatar
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    don't have the neccisary machines. Calling in the flat bed 2marow. MAN DOWN.
    MISUBIE.com - the michigan subaru fourm.

    Stg 2 sti 2004. COBB DP/ Bosal CLE.

  5. #4
    Registered User MicMckee's Avatar
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    Is it making a puffing sound? And if you sit still can you see any burn off coming from the engine? (doesn't have to be tons)

    The head stud on my Idle rocker snapped on my old Eclipse and that's exactly how she acted...

    I was losing compression and wound up having to get new piston rings as well...

  6. #5
    Registered User 03CrazyTaxi's Avatar
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    Judging by the codes, front o2 sensor and maybe a vacuum/boost leak. Good luck.
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  7. #6
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    have you check your hoses and have you checked the MAF sensor

  8. #7
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    it could be an o2 sensor but idk it wont affect the car that bad most likley your car would run a little rich

    what did you do that made it do this any recent upgrades?

  9. #8
    Registered User 4cyturbowrx's Avatar
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    I am going to say i think the g35r took tole on your engine.....

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