2002 gets really mad during hard acceleration
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This is a discussion on 2002 gets really mad during hard acceleration within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; Hello, My clutch started slipping last summer at around 130000 miles, so I figured it was time to get a ...

  1. #1
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    May 2011

    2002 gets really mad during hard acceleration


    My clutch started slipping last summer at around 130000 miles, so I figured it was time to get a new clutch. The autoshop confirmed that the clutch was at fault so there installed a new clutch kit for way too much money. I picked up the car and drove it around for a while on a tight new clutch (very different feeling). Anyway, it's been a few months (I drive a ton) and now during hard accelerations at about 4-5 rpm the car will jerk really (really) hard, and stop accelerating. It's different feeling than when the clutch was slipping which was a lot more gradual and calm.

    Possibility?: The autoplace handed me some sort of arm like thing thats supposed to attach the transmission to the frame and said they couldn't get it on. He said it's not necessary so I put it in a drawer in my room.

    Also the check engine light turned on the first time it happened and never ever turns off.

    Any thoughts?

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  3. #2
    Super Moderator (Actually a SuperSpy) SD_GR's Avatar
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    Jul 2002
    CA, US
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    The part in your room is intended to keep the gearbox from pivoting as the car accelerates. Put it on.

    The rest sounds like fuel cut. Have the code read (ideally, for free) and post the code.
    The world breaks everyone and afterward many are strong in the broken places. But those that will not break it kills. It kills the very good and the very gentle and the very brave impartially. If you are none of these you can be sure it will kill you too but there will be no special hurry. Ernest Hemingway, A Farewell to Arms, 1929
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  4. #3
    Registered User teflon_jones's Avatar
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    Apr 2007
    8000' up in Colorado
    Yes the code we must have.
    Past Subies - '11 STI Limited stage 1+ and '04 STi stage 2+
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  6. #4
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    May 2011
    I had the CEL read and got three codes:


    The car is completely stock

  7. #5
    Registered User poly_poly-man's Avatar
    Join Date
    Feb 2010
    Rochester Institvte of Technorcery
    overboost and 3/4 misfire. Sounds like something in the wastegate/solenoid is messed up. I think the misfire could be caused by the consequences of overboost, but you could have engine issues too.

    Do a once-over on your entire engine. Make sure all the vacuum lines are sealed and not cracked, and that you have the restrictor pill you need. If those are all good, make sure the wiring to the wastegate solenoid is good. If you've still found nothing, try a compression test. Some datalogging might be good for finding the cause of your wastegate issues.
    My big thread: The Used WRX Buying Checklist - Please Contribute!

    My current car: 2002 WRB WRX Wagon.
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