Misfires at idle

[bsteff]

I have searched all the forums for the misfire key word and haven't been able to find a solid answer. I have a p0300 code and for the life of me can't figure it out. On idle it is misfiring on all cylinders and will die. Under throttle, usually above 1200 rpm, everything clears up. New fuel pump assy, plugs, wires, cam sensor/ crank sensor (can't get it to do a relearn cause of the codes), IAC, TPS, Throttle body. Had a new MAF on it, was still getting code, changed the connector and now the code went away. I've also used two different PCM's and it still runs the same. I have also changed the upstream o2's waiting for the downstreams to come in. Any ideas/suggestions would be greatly appreciated. I did find a new harness on rickscamaro.com but that's $700 I don't want to spend and a headache I'd rather avoid.

[sam I am]

I think you might have answered your own question, if you can not do the relearn the cam sensor is out of relation to the crank sensor, and at idle you are firing right bank, left bank, with no timing.