No power to my injectors

[So Cal 420a DSM]

My 420a is getting no power to the injectors. I have fuel pressure and spark. Is it possible my
crank sensor is bad?

 

[seyzar18]

yeah i would check your crank sensor and if that's not it i would pull your ecu out and check your computer to see if anything looks burnt. I have had the exact same problem on both of my dsms and in both cases it turned out to be the computer. Good luck.

 

[So Cal 420a DSM]

I took a look at my ecu and it was pretty hard to see through the jell

 

[mcrae_06]

This might not apply to you 420a guys, but I remember hearing something a while back; apparently washing your engine allows water to seep down into the timing cover which shorts out the crank sensor. I would have a look if you've recently washed your engine.

 

[Black-Out]

Power being the power supply to the injector should be constant key on battery voltage the ECU should pulse ground- Even if the crank sensor is bad you should have power and not the pulse ground which the ecu will send to allow the injector to fire. I would start by checking any and all fusible links in the fuse panel under the hood including the fuses in the passenger compartment first. If you have no POWER then that's where you should start. Now if you have no injector PULSE but you have battery voltage then you should check your crank sensor and cam sensor. Have you tried voltage checking the injector harness? hit it with a volt meter key on and check for battery voltage one of the two leads should be at least 10.8 volts or higher depending on the condition of the battery.

If you check and you have power but no pulse then go to the sensors,But I'd start out with the cheapest and simplest thing first which is checking the fuses.......

Will-