400HP EFI - Vehicle won't start, fuel injectors not spraying
Hoping someone can help with this. I've got an older 30003 400HP EFI with the first generation fuel command center. The vehicle ran fine then after sitting for about 6 months would not start. I can spray carb cleaner in the throttle body and the vehicle will start and run for a few seconds.
1978 Dodge 440, Edelbrock Performer intake, cam and valve springs, but otherwise stock
I checked the following:
- Fuel pump - Not exactly sure of the pressure (the fuel command center pressure gauge never really worked), but I checked the volume of fuel coming into the throttle body and it seems plenty. I also made sure the fuel command center was full of fuel by cranking the engine with fuel pump off.
- Removed one side of the unit and checked the fuel inlet and injectors for any clogs. Everything looks brand new.
- Checked the voltage while the engine is cranking. Voltage is 10+ volts or better. Handheld unit does not blink.
- Checked all 3 fuses and ensured that voltage is coming into the unit.
- All wires look good. Battery is fully charged and good.
- Fuel was treated with stabilizer before vehicle was parked. While not perfect, the fuel fires the engine if sprayed into the throttle body.
- Fault codes 36 and 105 while cranking, but no codes are stored.
When ignition turned on, fuel pump comes on and primes the throttle body. The best I can tell, is that the fuel injectors are not spraying. The throttle body barrels are dry.
I've gone through numerous YouTube videos and tried everything, but it still won't fire. Is there a way to force the injectors to fire or something I'm missing that would cause them not to fire?
Any ideas?
Thank you
The original fuel command center is known to be problematic. That's why FITech redesigned the unit. I recommend installing a quality fuel pressure gauge on the discharge side of the command center. Fuel pressure should be 58 psi (others can confirm). You can be moving fuel - in volume - but that doesn't mean the fuel pump will achieve the required pressure.
Good luck!!!
@69_r-code Thank you for the suggestion. I tested the fuel pressure and it is right at 58 psi. So we are good there.
I sent an email to FiTech Support and they provided this information, which did not work. They suggested I send the unit into them to repair. However, it's been 2 weeks and 2 emails and they have yet to get back to me with instructions on sending it back. Seems their Support is lacking a bit.
But I'll post it here in case it could help someone else.
From FiTech Support - Try the following:
Throttle body ECU PROGRAMMER PROCEDURES to reset the unit and trigger the injectors.
- First i would head over to the main menu and head over to the display set-up option on the main menu.
- Next, head over to the ECU PROGRAMMER option and make sure its set to SHOW.
- After head over to the MAIN Menu and select ECU Programmer and download the file that is displayed there.
- Download the file.
- After downloading the file and the download is finish, unplug the handheld and plug it back in, after that head over to the MAIN MENU and scroll down to WRITE CAL TO ECU and you ill again download the file that begins with DEFAULT and select the one based on your engine L4, V6, V8.
- After downloading you will head over to the main menu and go to dashboard all the way to the top.
- Enter dashboard and turn the key off and wait until the values clear, screen will stay on but values will disappear.
- Then turn the key back on and you will head back to the main menu and head over to the FITECH INITIAL SET-UP and set all your settings based on engine and transmission