So, I've always noticed that if I let the clutch out a little fast at low RPM, the whole car shakes as I start to move - understandable, it seems like the engine's just vibrating in the rubber mounts.
Today, it happened more often than usual - and at once point, I noticed that it still shuddered when I raised the rpm to about 2k or higher (with the clutch still slightly in) - the whole car shook back and forth quickly. The shuddering did not change speed. I fixed without noticing, I think by pushing the clutch in a little more then letting it out.
Today it rains. It's about an average temperature. The shuddering doesn't happen every time I start off.
What's causing the shudder? How do I avoid/get rid of it? I need a new clutch, which I'll replace very soon.