At any speed just above a fast idle, (25 mph) the motor surges like mad.
I replaced the injectors and I might have damaged something when I had the intake plenum help up and out of the way of changing the injectors. I cannot find any electric plugs unpluged and any lines disconnected. The motor starts to rev and then cuts off and the min it slows it revs and cuts off again and it keeps doing this until I ease off the gas pedal.

sounds sort of like a tps problem.

I though about that and I disconnected the TPS when the motor was running and it quit?? Should it do that??