Thread: Need help with problems

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  1. #1 Need help with problems 
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    Hey guys I looking to buy a 98 gtp fully loaded with 160kms for around $2500. At a glance it seems like a good deal to me but i took it for a test drive and it seems to have a few issues. 1) the brakes need to be replaced because they are ****. 2) it has a custom exhaust that sounds like it has a leak. and 3) the engine shakes the entire car. So i'm not so worried about number 1 and 2 so much but number 3 has me worried. I inspected the car pretty decently and the engine shakes and kind of makes a knocking sound that seems to be coming from the supercharger. ANY opinions or analysis would be appreciated! thanks guys
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  2. #2 Re: Need help with problems 
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    I would check the engine mounts.
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  3. #3 Re: Need help with problems 
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    That's what I was thinking, but there is still a slight knocking sound in the supercharger area
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  4. #4 Re: Need help with problems 
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    sc coupler easy fix.
    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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  5. #5 Re: Need help with problems 
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    please expand! haha i'm really hoping it's nothing major
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  6. #6 Re: Need help with problems 
    Moderator dsmuts's Avatar
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    The snout of the blower has to come off there is a plastic coupler in there and it gets worn out and need replacing every now and again.
    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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  7. #7 Re: Need help with problems 
    I live here. Slick2500's Avatar
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    Does it sound like it has rocks in it?
    2003 Redfire Metallic Chevy Tahoe Z71 - Airaid Modular Intake Tube, Flowmaster Exhaust.
    Quote Originally Posted by The Sunfire Guy
    Superchargers take away horsepower
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  8. #8 Re: Need help with problems 
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    yup you guys nailed it i think. so i got bad brakes, possible exhaust leak, and this coupler. how much do you guys think all this would cost me?
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  9. #9 Re: Need help with problems 
    I live here. Slick2500's Avatar
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    Coupler and supercharger fluid shoudl be about $40 tops and the brakes and exhaust leak it really just depends.
    2003 Redfire Metallic Chevy Tahoe Z71 - Airaid Modular Intake Tube, Flowmaster Exhaust.
    Quote Originally Posted by The Sunfire Guy
    Superchargers take away horsepower
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  10. #10 Re: Need help with problems 
    Moderator dsmuts's Avatar
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    Doing the brakes and sc coupler yourself probably about $100. Exhaust will vary. I had a turbo back put on my passat for $150 at a local exhaust shop.
    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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  11. #11 Re: Need help with problems 
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    my brother seems to think that the engine shaking at idle could be a bad cylinder. what do you think?
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  12. #12 Re: Need help with problems 
    Moderator dsmuts's Avatar
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    See which codes it's throwing
    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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  13. #13 Re: Need help with problems 
    I live here. Slick2500's Avatar
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    It could be a bad motor mount.
    2003 Redfire Metallic Chevy Tahoe Z71 - Airaid Modular Intake Tube, Flowmaster Exhaust.
    Quote Originally Posted by The Sunfire Guy
    Superchargers take away horsepower
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  14. #14 Re: Need help with problems 
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    Well hopefully the guy wont mind me taking it to a parts store to check codes but if there arent any codes does that rule out the cylinder?
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  15. #15 Re: Need help with problems 
    Moderator dsmuts's Avatar
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    You'd have to do a compression test to be positive
    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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  16. #16 Re: Need help with problems 
    Turbo is the way to go. BillBoost37's Avatar
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    It could need a tune up pretty badly too. and it might be a chipped piston. Although they usually idle pretty good with a chip.
    I drink..so consider that when reading my posts.

    2010 Audi A6 Dual IC's
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  17. #17 Re: Need help with problems 
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    thanks guys but i think i'm just going to pass on this one.
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