Throttle body/ plate?
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This is a discussion on Throttle body/ plate? within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; 2004 STI with 68k on it fully factory, I have been hearing a slight buzing sound come from my throttle ...

  1. #1
    Registered User ALLWHEELDREAMS's Avatar
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    Angry Throttle body/ plate?

    2004 STI with 68k on it fully factory, I have been hearing a slight buzing sound come from my throttle body when the key is set to Acc. and also when i listen right after i turn the car off. what is it? maybe the plate sticking? any helpful hints would be great. i am running a lil rich out the tail pipe, i am thinking this may have some thing to do with it. also my MPG is not great avg. of 19- 19.7. and that being very light on it. i have heard that from fac. they run a lil rich but can be tuned to run better and more fuel efficent. Is this true? Thanks for any info. ps only use premium gas.

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    Registered User JUSTINSNUTSWINGER's Avatar
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    Have you cleaned out your throttle body lately ?
    N-swinger

    2000 Escort

    Maintenance schedule and poke in the eyes:
    http://www.clubwrx.net/forums/genera...nce-guide.html

  4. #3
    Registered User ALLWHEELDREAMS's Avatar
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    i havent

    i haven't cleaned it. i bought it with 66k on it and all the service records were done to it. it had the 60k service which includes a fuel filter and plugs. i believe that the 35k mile service includes the same things. thats why i am a lil confused why the throttle body would be needing a cleaning. So the short answer, i am not sure. and no i haven't. any suggestions on how to clean it? just spray from the inner cooler side?

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    Registered User EvoEatr's Avatar
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    yes you can try cleaning the throttle body..pop the intercooler off and get some throttle plate cleaner or 2+2 and a toothbrush and scrub around in there pretty well including the plate...than get a rag and wipe out all the carbon....I believe Ive seen a problem similar to this before...try this...you said you hear the noise is ACC....unplug your IAC and turn the key to ACC (dont start the car) do you hear the buzzing sound now?

  6. #5
    Registered User ALLWHEELDREAMS's Avatar
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    Thanks

    Thanks I wont be able to try it till sunday. but after I do Ill let u know the outcome. Thanks for the help. or right now i have been giving it what they call a "deep breath" you take the motor up to just about redline and hold there for a few seconds before you shift through the first few gears. you dont have to jump on it. It can be don gradully. this is suppose to help blow out n burn off any build up within the plugs and combustion chambers. hope to see if that helps at all. again thanks for the help ill try it out on sunday.

  7. #6
    Registered User JUSTINSNUTSWINGER's Avatar
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    Try a Seafoam treatment after you do the throttle body cleaning. These are things you should be doing on a normal basis. Every 2 oil chages or so.
    N-swinger

    2000 Escort

    Maintenance schedule and poke in the eyes:
    http://www.clubwrx.net/forums/genera...nce-guide.html

  8. #7
    Registered User ALLWHEELDREAMS's Avatar
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    Ok, thanks for the tip/advice.

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