Thread: No power after shifting and weird noises

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  1. #1 No power after shifting and weird noises 
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    Hey guys I am having a problem with my motor here recently I changed superchargers on my car and added a 3.4 pulley to help my car out some because it is low on compression. Anyway when going WOT the car pulled hard all the way through first gear but as soon as it shifted to second it fell on its face and almost died had no power at all and when I would give the car any gas it made a weird rattling sound which almost sounded like a bad spark knock. And today the same thing only from 2nd to 3rd gear WOT Same weird noise wondering if you guys had any ideas. Thanks!

    Edit: Also My buddy has scanned my car for Kr and I had none
    2000 Gt Navy blue Sd hood, Halo's, Smoked tails, Engine mods soon.
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  2. #2 Re: No power after shifting and weird noises 
    I live here. 02NavyBlue's Avatar
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    Uhh supporting mods for the 3.4? Everyone knows what happens when you run an overdrive pulley without other supporting mods.
    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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  3. #3 Re: No power after shifting and weird noises 
    Moderator dsmuts's Avatar
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    How do you know your car is low on compression?
    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
    01 gt z7 turbo tep trans zzp motor
    08 g8 gt cam exhaust 11.87@118
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  4. #4 Re: No power after shifting and weird noises 
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    Quote Originally Posted by 02NavyBlue View Post
    Uhh supporting mods for the 3.4? Everyone knows what happens when you run an overdrive pulley without other supporting mods.
    CAI, 180 Thermostat, 104's
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  5. #5 Re: No power after shifting and weird noises 
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    Quote Originally Posted by dsmuts View Post
    How do you know your car is low on compression?
    Compression test
    2000 Gt Navy blue Sd hood, Halo's, Smoked tails, Engine mods soon.
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  6. #6 Re: No power after shifting and weird noises 
    I live here. 02NavyBlue's Avatar
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    Well the loss of compression could be a chipped piston. The noise could be a chipped piston. Those few mods on that pulley could result in a chipped piston.

    http://www.harborfreight.com/digital...era-67979.html
    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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  7. #7 Re: No power after shifting and weird noises 
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    Sir have you not realized your car is possessed by demons. I figured you would realized 3 or however many motors ago.

    2002 GTP Coupe
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  8. #8 Re: No power after shifting and weird noises 
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    Quote Originally Posted by 02NavyBlue View Post
    Well the loss of compression could be a chipped piston. The noise could be a chipped piston. Those few mods on that pulley could result in a chipped piston.

    http://www.harborfreight.com/digital...era-67979.html
    If it was a chipped piston wouldn't I be hearing the noise constantly not right after it shifted? And since I have no Kr* wouldn't that mean I have sufficient mods? Not trying to sound like an ass just new to this stuff trying to learn
    2000 Gt Navy blue Sd hood, Halo's, Smoked tails, Engine mods soon.
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  9. #9 Re: No power after shifting and weird noises 
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
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    How would adding more boost help lost compression in a cylinder?

    Do you understand how an engine works?




    How are you seeing that you have no KR anyway, though that question is mute because how this thread as gone.

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