so i did the f20b swap and got the car to run. well idle. but the idle is iratic between 1k and 2k and it wont rev up. like if i feather it i can get it to go to maby 4000 rpms. and when the key is all the way on but the car is not started the tach neetle jumps around. any ideas.

can someone please help me out on this one... its starting to drive me nuts

 

That is kinda weird.... Maybe check your idle control valve. If not be that maybe your cluster is broken. Also checks fuses under the hood and dash..