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Engine Vibrations at 1500-1800 rpms // PROBLEM SOLVED //

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Old 08-04-2009, 01:43 PM
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I wonder if your VVti advance gear is hanging up intermittently. Any DTCs?
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Old 08-04-2009, 01:48 PM
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nope... no codes... but here was in interesting diagnosis i kinda discovered today..

on a downward decline... vibrations kinda gone.. lol.. smooth a wistle ..on a verticle incline upward.. vibrations are a little rougher then average... which leads me to believe the mounts are part of the issue.. im going to try more declines now in some garages and heavy hills i know of... and the mystery continues lol
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Old 08-04-2009, 02:27 PM
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i doubt its going to do anything.
but do me a favor and take off that stupid ETD.
i hate those things.
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Old 08-04-2009, 02:48 PM
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actually yea im going to take it off and sell it... its in the way of the wire tuck ... ZOMG!!! =p
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Old 08-04-2009, 03:35 PM
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Originally Posted by TCpete
nope... no codes... but here was in interesting diagnosis i kinda discovered today..

on a downward decline... vibrations kinda gone.. lol.. smooth a wistle ..on a verticle incline upward.. vibrations are a little rougher then average... which leads me to believe the mounts are part of the issue.. im going to try more declines now in some garages and heavy hills i know of... and the mystery continues lol
S-pipe hitting the crossmember?? That would explain the angles affecting it.
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Old 08-04-2009, 08:54 PM
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id make sure all the bolts are tight on all the mounts, and also check the mounts to make sure they still appear to be in good condition.

and i doubt the ETD would cause that much noticeable vibration, but you never know...
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Old 08-04-2009, 08:59 PM
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i know the ETD in no way causes the vibrations im having.. its served me well.. now that i have all the ES mounts on the car and have had them on for over 15k miles... i can safely say the ETD has been almost just sitting there collecting dust.. but i luff et lol... motor stays rock solid in the bay
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Old 08-04-2009, 09:31 PM
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not mine.. send it my way pete! it seems no matter how tight i get these front and rear mounts... the bolt will slide on the mount
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Old 08-05-2009, 12:30 AM
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i have ONLY the mounts and my motor goes absolutely nowhere.
the ETD is garbage.
its like a big band aid, instead of fixing the problem it just covers it up.
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Old 08-13-2009, 01:38 PM
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PROBLEM FOUND...

so initially one of the things i thought it was that was throwing everything off was true... not the motor mounts like my first guess but my 2nd guess..



after dealing my busted stage 4 clutch from comp clutch i decided to go after the warranty for it since for over 10 months it was giving me problems.. well after 10 months i finally got the new clutch and after swapping out the old one with the new... BOOM.. crazy engine vibrations are gone.

turns out most likely a mixture of an imbalaced disc and hald of the disc parts rambling around inside and inbetween the flywheel and the disc pretty much i can say are the culprit of the problem.

new clutch is in and so far the crazy vibrations i was feeling before have disappeared and now its just the normal vibrations from motor mounts that i usually got before are left... a good relief for me ..thanks jeeebus for listening to my prayers lol

i also took the time to inspect all the mounts while the tranny was out and they were all nice and solid and clean...
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Old 08-13-2009, 03:17 PM
  #31  
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hey... not to thread jack but why do you hate your 12lb fly wheel and who makes it???
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Old 08-13-2009, 03:20 PM
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i like the flywheel.. i hated the clutch.. both are made by comp clutch... the 12lb flywheel is fine though.. i have no issues with it.
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Old 08-14-2009, 11:39 PM
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dam ive got the same clutch and im boosted..... and id hate to do another clutch anytime soon lol
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