Previa vibrates at idle & while excelerating

[MiniDonkey]

I have a 97 Previa that I can feel it vibrating while it's sitting at idle and while excelerating, almost like driving down a gravel road. It was more pronounced, and the rear drive line (the u-joint) had a crack in it, so it was replaced. It still vibrates, just not as bad.

What could I check myself? Any ideas?

[TRD BlackKnight]

My '95 Previa S/C LE also vibrates at idle. When stopped in the drive-thru it usually goes nuts with vibration. My friend thought it might be running on low RPMs. I don't know for sure b/c there is no tachometer--smart. When accelerating, it doesn't vibrate badly except for the fact that most of the engine is under the driver and passenger seats. This is pretty normal, but I can't say why it vibrates while idling.

[D0UG]

Check the accessory drive shaft. The rubber part of the joints can crack and cause this.

[mortaz]

hello
I just change the frount coupling of my prevai and all the vibratetions gos

[D0UG]

I believe that the accessory drive shaft and the A/C compressor are the most common mechanical failures for the Previas.

[bluefever]

if you need anymore help with your previa toyotavanpeople.com,is a very imformative source with a growing previa community

[nodrogkam]

the low rpms do contribute to vibration but if it hasnt stalled yet then its probably not that problem. Not sure how to adjust the idle rpms on a previa tho. You could try to make it a bit higher and see if that helps.