The idler pulleys should have the tiniest back and forth movement, they have a preset preload so they may move a couple thousands of an inch. But here is what I would do. Take it out and since this is a steady vibration, your going to do a few things for me so we can get this taken care of. I'll ask a few questions, you try it and get back to me, I can't relax until I know your sure you'll be fine with this.
Trans, as it is vibrating and your accelerating, try dropping it into nuetral, or low, does it ever shake in reverse? Then try taking the belt completely off and let me knoww, it won't hurt anything on a quick testdrive. It is constant so do a short stretch. It's gonna be up to you to locate it by trying these things out. No belts, then try the different gears, is it RPM(engine) related, in other words can you get this standing still, I take it not, or watch your rpm's, in low, try it, as it vibrates tell me the RPM's, then D2, D3, OD, or low instead of 1. Then reverse. Is the steering wheel shaking? If you have to disconnect the torque converter, I doubt if you'll need to go that far, if the engine, while standing still never vibrates, its in the drive line, each seperate gear selection applys a different hydraulic, so I can tell you if it's in the trans, shut the car off as its vibrating and see what happens, it takes alot for the whole car to vibrate the way you say, not just an out of balance converter. But since it was done, anything is possible. I just want to rule the engine and pulley system out. And pinpoint the transaxle. Get back to me with as much info as possible. Drive line will vibrate with everything off. Trans will change with the gear selections and well the converter is always turning so if it was so bad you could feel it shake in any rpm at any gear, it is bolted to the crankshaft, we will go slow and safe, this is the key, safely, don't lock your steering when you bring the key back from run. We'll get it, this I promise. Ok
thanks for the reply. You may have excessive input shaft end play, or the pump may be bad. Or the differential area.
Is this a 3.0L or 3.3L?
Friday, April 16th, 2010 AT 2:30 PM