Im having a weird problem with my idle. When i start the car up when its cold, it goes up to about 3k, then drops down to 0. after its warmed up a little, it drops down to about 2k, and idles okay, but after its warmed up, or i rev it a little, it starts bouncing +/- 1000 or so rpm, and when i push in the clutch, it drops down to 0 sometimes and stalls. its not the thermowax or anything, because it was doing this before and after i bypassed it. could it be the BAC? how do you adjust it?

 

There is a screw on the BAC. Turn it and see if it improves things. 1000RPM is a pretty big bounce. I had mine adjusted completely wrong and it was ~100rpm bounce. Maybe a vacume leak.

That said, I wonder why it dies when you put the clutch in?

 

I had a similar situation, after it starts, it'll bounce to 3k and drop to bottom, sometimes it'll just drop to bottom and die unless i put some throttle.

 

how did you fix it?

 

bouncy idle- TPS is set inproperly or has gone bad.