Engaging into first causes crazy vibration
 

I'm having some serious vibration when engaging into first from a stand-still. Every other gear seem to engage fine and tranny feels fine, although some gear engages on the highway weren't as perfect as usual. The vibration also goes along with a rattle. Tranny was rebuilt about 15,000 miles ago by Shep, ACT 2600 with approx 18,000 miles on it, new clutch slave and master and ss clutch line. Car is a 97 GSX with 119,400 miles.

Re: Engaging into first causes crazy vibration
 

What happens if you start from a stop in 2nd? I would look at a bad clutch disk first.

Re: Engaging into first causes crazy vibration
 

I haven't tried that. Someone was telling me it might be fluid/oil that got onto the clutch disk. What would be wrong with the clutch disk?

Re: Engaging into first causes crazy vibration
 

If it did, it'd probably slip as well. Check your three tranny mounts and your engine mount.

Re: Engaging into first causes crazy vibration
 

Nope, I was the one that told him that. When oil or similar gets onto a clutch disc, that specific spot actually tends to grab harder then the rest of the disc, which results in chatter. Depending on disc material of course..