04' STI, need help ASAP.
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This is a discussion on 04' STI, need help ASAP. within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; I'll try to explain this with as much details as possible since I do not have any photos or video. ...

  1. #1
    Registered User
    Join Date
    Jan 2011

    04' STI, need help ASAP.

    I'll try to explain this with as much details as possible since I do not have any photos or video. 04'STI, 148k miles stock.

    Well, this has happened a few times but has not occurred in a while so I assumed it was fixed. Yesterday after turning off the car and heading to BK, when I got my order I left. When I turned on the car it began to shake and then I noticed smoke coming from the right side of the engine bay. I immediately turned off the car and back on again, same thing. So I decided to wait a while and then it went back to normal, I still drove home very carefully.

    ** This happens basically within the same time frame 5min; turn car off, leave for a few minutes, turn back on -- then noticeable shaking starts with smoke coming from engine bay.**

    I just really need to know what this is before it gets worse, also can it be that my brother accidentally put 89 octane gas instead of 93 a few weeks ago (I quickly changed the gas, since I noticed knocking noise meaning he put wrong gas, which thankfully the noise is slowly reducing).

    EDIT -- I found a video of how my idle was everytime this happens, only thing is the car in the video is a WRX. I was looking for another one but with a STI, no success.

    Thanks everyone for the help
    Last edited by DoloSoLow; 01-30-2011 at 12:36 PM. Reason: Found a video source

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  3. #2
    Registered User teflon_jones's Avatar
    Join Date
    Apr 2007
    8000' up in Colorado
    Let's start with what mods the car has. Is it stock?
    Past Subies - '11 STI Limited stage 1+ and '04 STi stage 2+
    '13 Wrangler Rubicon - custom front bumper w/12k lb winch & off-road lights, skid plates, diff guards, etc.
    '04 Porsche 911 Turbo GT2 clone 600 HP/TQ
    '77 F-150 heavily modded for off-roading

  4. #3
    Registered User
    Join Date
    Jan 2011
    Yes, its completely stock.

  5. #4
    Moderator Donkey's Avatar
    Join Date
    Apr 2005
    Da boonies,Va
    I Support ClubWRX
    Well if it doesn't have a CEL then it could be alot of things. Maybe it just needs new sparkplugs or the MAF cleaned. Check to see if anything is loose/cracked on vacuum hoses and intake track. Clean and retorque the engine grounds and battery terminals. With any substantial data its kinda hard to diagnose of the internet.
    Resident Adviser @ WTF Tuning, LLC
    2002 FORESTER S
    1998 FORESTER S

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