I have a friends truck, its a 99 and he was driving it and the gauges went wonky on him and the truck shut off and wont start now. it cranks over fine with plenty of speed but just wont fire. I am having him tow it to my shop so I can scan it to check for codes. all the fuses seem to be good and the fuel pump on the back driver side of the motor is running, I have not check for fuel pressure from that yet. that could be a problem but what I am very unfamiliar with is the electronic parts on the engine. im not sure if there are any parts to check for voltage on the injection pump or anything else that can be problematic. I know this section doesn't get much traffic but any help would be great.