I have a 2002 RD688 with E7 400 that will only crank but not try to start. I just installed a new starter because the old one was starting to hit and miss due to a loose ground in the starter itself. I’m 99.9% sure all wires are connected back as they were originally. I did break the oil pressure sensor when changing the starter and replaced it with a new one. I am showing oil pressure when cranking but I also got into the wires of the oil temp sender but appears to still be intact and I put some hot glue to make sure they don’t touch obviously I can’t tell if it’s still working due to it not running but I’m assuming the temp sender only runs the gage and maybe a warning light but wouldn’t think it would cause a no start. Had a tech put a computer on it last night and showing “Short to earth” on a couple of the EUP’s but the fix for this is to basically check every single connection and electrical component on the truck and I don’t have any idea where to start. Any help or general area to start checking would be great. I also would like to know where my VECU is located which is one of the components it said to check.
