emission testfailed,HC was 422 to be 220 loaded,idle was1084 to be 220.CO good

Check for vacuum leaks if your idle is surging erratically.

you say at 2K rpms itcuts on and off. Is it like the rev-limiter is kicking in? If so get it scanned by a shop that will be able to read 'live' data and see what the sensors are doing. A wild guess would be a dead spot in the TPS , but that's a wild guess.Put a vacuum guage on it and watch and record the readings and whether it's steady or smooth , and reply with that info if the scanner bit is unavailable.