So Ive been reading around and I cant seem to find my issue on here. I have a 1980 280zx and recently Ive been putting work into it so I can make it my daily driver while I work on my bug but I cant seem to pinpoint this problem. When I start the car up it runs and idles fine around 8-900rpm. But after a little bit of driving it will Idle at 2000 and rev out at 2300. It doesnt do it all the time though. When I'm at a stop light and its doing this I just hold the brakes and let off the clutch a little bit i can get it to drop but when I push the clutch down it climbs right back up. I heard something about a BCCD? I have no idea what that is. And I also heard sensors can cause this. If anyone had a similar problem and can lend advice it would be much appreciated. Things Ive already replaced. Ignition Module on distributor. Throttle Position Sensor vacuum lines (all of them) inlet boots, air filter. AFM. Injectors and Harness. cleaned throttle body.