So lst nite i had my uim off and the primary fuel rail out to test the "cc" of the injectors. Well when i go to the ignition to the on switch, both of my fans turn on? I'm no sure if they turned on because of some wires disconnected from the uim and injectors. Does anyone know why they would due this? I'm now thinking that this is my idle/running problem.

 

I have the same problem when i go the ignition to on the fans start.
I think that is one of 3 sensor is fault but I dont no which one.