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2004-2007 Cadillac CTS-V General Discussion Discussion, Vibration - too lazy for FAQ in Cadillac CTS-V Series Forum - 2004 - 2007; I bought my 80+ (now 90+) mile '04 in July. At the time it had no mufflers, just turndowns near ...
  1. #16
    Dave Richey is offline Cadillac Owners Member
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    Re: Vibration - too lazy for FAQ

    I bought my 80+ (now 90+) mile '04 in July. At the time it had no mufflers, just turndowns near the rear, and I drove that loud beast for some time that way. A while back I put stock mufflers on and have been driving it daily for the last several thousand miles (and who knows how many tanks of gas). Once it was quieted down I have become in tune with just about every noise and vibration noted on the forum. I have come to the conclusion that I can just drive it, enjoy it, and fix it when it breaks or I can become a hypersensitive, paranoid pantywaist. I live in Mississippi, there ain't much sympathy for a guy wearing panties down here.

    I was worried for a while about having no warranty. Now I've come to the conclusion that I'm glad that if it breaks I just fix it myself without worrying with a dealer.

  2. #17
    soflarick's Avatar
    soflarick is offline Cadillac Owners Enthusiast
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    Re: Vibration - too lazy for FAQ

    Quote Originally Posted by SkullV View Post
    The more poly you add to the mounts/driveline the more vibration you are going to get. None of it really bothered my until I got the LS7 clutch kit in, but I think there is something wrong with my engine so it's going to the dealer tomorrow after I get a chance to datalog it first.
    Post the results of the examination.

  3. #18
    SkullV's Avatar
    SkullV is offline Cadillac Owners Connoisseur
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    Re: Vibration - too lazy for FAQ

    Will do. It's actually going in on Monday.

  4. #19
    ewill3rd is offline Cadillac Technician
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    Re: Vibration - too lazy for FAQ

    DRKSIDE,

    Now that was excellent information.
    It sounds like some sort of engine vibration, the next step would be to remove the serpentine belt (don't run it for a long time) and see if the vibration goes away.
    It could be accessory induced, so eliminating all the accessories would be the next step. From there if the vibration remains then it sounds like something connected to the flywheel. That could me a flywheel/pressure plate issue or possibly a balancer.
    The best thing to do after that would be to put a vibration analyzer on it and punch in some data to find the frequency of the vibration and identify possible sources and then eliminate them.

  5. #20
    rand49er's Avatar
    rand49er is offline Cadillac Owners 10000+ Posts
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    Re: Vibration - too lazy for FAQ

    Quote Originally Posted by ewill3rd View Post
    ... remove the serpentine belt (don't run it for a long time) ...
    Fixed.
    '05 CTS-V, Maggie, Kooks, Hotchkis, Ground Control, Corsa, B&M, DSS/Hendrix, Full 3M Clear Bra, Autovation, V Headrests, CTS Console, STS-V 55w Fogs, Black Vette FRCs, Specter Werkes, Katech LS9 Clutch, SS Brake Lines, Heavymetals U-Turn Fuel Line Eliminator, Momo Combat Evo Shift Knob, Wldwhl Clear Sidemarkers, Linea Corse LC855 Wheels or OEM wheels w/'06-'07 Center Caps, plus a couple more. 472 RWHP/411 RWTQ (Mustang Dyno).

  6. #21
    ewill3rd is offline Cadillac Technician
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    Re: Vibration - too lazy for FAQ


    Yeah, I guess I should have highlighted that.

  7. #22
    your maker is offline Cadillac Owners Fanatic
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    Re: Vibration - too lazy for FAQ

    ?? vibration do to the ls7 clutch kit.

  8. #23
    your maker is offline Cadillac Owners Fanatic
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    Re: Vibration - too lazy for FAQ

    i know i got the vibration once i installed the motor mounts. ewill3rd did you experiance a vibration when you just install the UUC motor mounts?

    i am going to be doing a ls7 kit after the new year but i do have the vibration around 2000-2500 rpm currently

  9. #24
    ewill3rd is offline Cadillac Technician
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    Re: Vibration - too lazy for FAQ

    The motor mounts might bring a bit more powertrain vibration into the cabin since they are not hydraulic like the stock ones.
    Some might be considered normal, when your teeth start chipping that is a bad sign.

  10. #25
    Ace840 is offline Cadillac Owners Member
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    Re: Vibration - too lazy for FAQ

    I am having this EXACT problem right now. engine vibration right around 2300 - 2500 RPM. Can you tell me if you ever determined what the problem was? We just replaced the water pump and replaced crankshaft balancer. THANKS!

  11. #26
    kevm14 is offline Cadillac Owners Connoisseur
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    Re: Vibration - too lazy for FAQ

    I thought some people have trouble with crank dampers going bad. I forget if it was mainly LS6s or mainly LS2s, or both.

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