The engine computer (pcm) controls the injector pulse. It looks at numerous sensors and switches to calculate pulse width
the ignition module or injector fuse
1990 ford ranger 2.3 no injector pulse what causes this
if you do not have spark you will not have fuel check coil module and ignition pick up coil.
200 Nissan exterra v6 have spark and injector pulse no power to fuel pump
tools u can use are a noid light....or an injector pulser ''TOOL''
Injector pulse is controlled by the ECU. Injectors Have a red wire that is hot. Black wire is controled by computer ground...
Pulse width is the time in milliseconds that the injector is energized, the duty cycle is the percentage of on-time to total cycle time
On a 1991 Miata, the battery is in the trunk. It is probably the same on the 1990.
The engine computer.
The ECU. (COMPUTER)
under the hood