86 Bronco ll 2.9L won’t start

I would say its either the fuel pump relay or the Ecm computer relay that are both located almost right next to each other inside engine compartment passenger side top fender in between air box you can buy from parts qeek online is where I got mine also it does also happen to cause this issue is the emergency fuel pump shut of Inertia switch kiss a vehicle rolls over to shut the pump off that's located passenger side inside the cab Where the for me so farewell for your feet are lost little black Box a little cap disconnect the plugin hard wire with the loop wire and each sign in to rule it out As the problem Most likely that's gonna the relays also if you can afford it buy a new BAP sensor that can be a cause of all sort of weird issues and won't show up on Bose scammer either and just go thru and make sure connections are all together in engine bay their another main harness plug that plugs in at the alternator and if it's not fully pushed together shes not gonna run best of luck you'll get it I'm betting with relays if you don't hear the pump running its relays or it's one of the two pumps relays are cheaper and easier plus there due to fail anyhow given age of truck!