New to working on a Mustang, so even the most basic help is welcomed. 1990 2.3l Fuel pump problems. If I bypass the relay under the drivers seat, the pump will work and the car will start. When I check the imputs to the relay, no signal. Where does the signal come from? Is there a pressure switch on the EFI that turns on the fuel pump relay. Does it go to some computer. If so where is the computer and what are the pins? Thanks for any help.
Jeepersmitty
Jeepersmitty