So guys, got the car back together after rebuilding the engine. Just started it for the first time, and the RPM's jumped really high without any opening of the throttle body done by me. I would guess 2.5-3k... Didn't look at the tach in time, shut it off right away.

The only things that changed was a fixed vacuum leak, and fixed the intercooler pump that wasn't working before. Everything else should be the same.

Can anyone think of anything that would cause this? I have never even heard of anything like this happening.