Thread: Knocking noise

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  1. #1 Knocking noise 
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    I am getting a knocking noise from the engine for about a minute after start up and then it goes away. Anyone know what this could be?
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  2. #2 Re: Knocking noise 
    WHERES THE LAMB SAUCE?!?! Matt Palm's Avatar
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    maybe its
    dhp tune, sd lip, shiny stuffs, retros, gen 2 spoiler, gpo's, pregens
    http://www.grandprixforums.net/showthread.php?t=75198
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  3. #3 Re: Knocking noise 
    Moderator dsmuts's Avatar
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    Video would help a ton.
    98 GTP modded 1.9's, sd headers, 3.4", zzp 1.0 230K miles scrapped.
    04 Comp G zzp stb's, UMI ta's, Speedbuilt sways, bully flo heads, XP, zzp headers, fsic, thrasher shift kit, 60#, 2.6" corsa 2.5", Inferno hood
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  4. #4 Re: Knocking noise 
    I live here. 02NavyBlue's Avatar
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    Quote Originally Posted by dsmuts View Post
    Video would help a ton.
    See post #2






    But yes there are different types of sounds many people may call knocking, so take a video with good audio and we'll try to help you from there.
    2006 Grand Prix GT S/C 109k - Modded Transgo Shift Kit, Gutted Airbox, Dash Cam, and Inlays. Retros soon to come.
    2002 Grand Prix GT N/A 127k - Same as 06 Plus: Trans Cooler, DIY Aux Input, LED lighting, Suspension Upgrades, Tint, Retrofits.
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  5. #5 Re: Knocking noise 
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    I'll see what I can do
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  6. #6 Re: Knocking noise 
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    I have concluded that it is more of a ticking noise. Took a video on my phone, but I m not sure how to upload it
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  7. #7 Re: Knocking noise 
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    After much effort here is the video of the noise: VIDEO0002_zps7f527758.mp4 Video by TNTtransam | Photobucket

    any help would be awesome thanks.
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  8. #8 Re: Knocking noise 
    GTP Level Member tms8582's Avatar
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    I really don't hear any knocking but maybe some kind of pulley or alternator squeal or maybe a bad bearing in the supercharger... it's hard to tell from that video. Can you listen from under the hood and get an idea where its coming from? Ticking is usually lifters but I can't really make that sound out from your recording.
    Stage 1 Comp Cam / 105 Springs / Yella Terra 1.7's / SLP Headers / Ported heads / 255 Walbro fuel pump / Siemans 60# Injectors / 2.8 Pulley / 180 stat, 104 AL's / Intense e85 tune / 3" ZZP exhaust / GXP seats / KYB Coilovers /
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  9. #9 Re: Knocking noise 
    I live here. 02NavyBlue's Avatar
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    I hear it in the video, it's most present right at the start. I think it's one of those things where you have to be there and decide whether or not its internal, then maybe conclude lifters or something.
    2006 Grand Prix GT S/C 109k - Modded Transgo Shift Kit, Gutted Airbox, Dash Cam, and Inlays. Retros soon to come.
    2002 Grand Prix GT N/A 127k - Same as 06 Plus: Trans Cooler, DIY Aux Input, LED lighting, Suspension Upgrades, Tint, Retrofits.
    Sold.
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  10. #10 Re: Knocking noise 
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    Thanks for the input guys. I just think it is strange that it is there at start up but then within a minute it settles.
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  11. #11 Re: Knocking noise 
    GTP Level Member tms8582's Avatar
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    Lifters can take a while to fill up with oil and then they quiet down.
    Stage 1 Comp Cam / 105 Springs / Yella Terra 1.7's / SLP Headers / Ported heads / 255 Walbro fuel pump / Siemans 60# Injectors / 2.8 Pulley / 180 stat, 104 AL's / Intense e85 tune / 3" ZZP exhaust / GXP seats / KYB Coilovers /
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  12. #12 Re: Knocking noise 
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    So is it a problem?
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