Quote:
Originally Posted by mark4g63t
Also wouldn't u-joints still cause an issue no matter acceleration or deceleration?
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Often times under load only. If there is play in a u joint it can cock under load becoming misaligned and therefore unbalanced causing a vibration on accel. Usually regardless of the gear just load. I don't think this is your problem.
Quote:
Originally Posted by mark4g63t
it will vibrate sooner..so yes? First it wont do it till like 3k in 3rd it will vibrate as soon as I give it any throttle.
I feel like I keep contradicting myself whether it's rpm or speed related lol
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Because it is both rpm and speed related and mainly load. To me it sounds like your describing a bad intermediate shaft tapered roller end bearing.
^ saying this I'm assuming the vibration is just the roughness from a bad transmission bearing vibrating through the car under load. And that all your driveshaft angles, u joints, and cv joints are good.