Hi.
I just finished installing in six new fuel injectors today and when I went to start I get nothing. I turn on the key and my MIL or "Check Engine Light" light on the dash is real fast blinking and nothing happens when I turn the key to start but that. If I cycle my key three times I got a P1740 code which is my transmission coding I think. My OBDII tool doesn't see the ECM and error codes that way. Does the power need to be on the ECM for a while to reset it all. The batteries have been unhooked for three days.

I put the key in my truck (without starting before injector change out) to put the truck in neutral and push it farther back into my shop up close to the upstairs floor. When I got to where I wanted it, I turned off the key. Then put it back in park. I don't know if this caused the P1740 code. I disconnected the two batteries after that. I don't see how changing injectors would affect the ECM but these touchy CAM electronics that leave you stranded drive me crazy.

By the way the gear selector isn't showing on the dash. I had this last year and had to change the gear selector switch on the tranny. It checks out fine and I did nothing there in this procedure. I only unhooked the valve cover connectors, batteries and a sensor lead on the intake manifold. I did remove also the cable to the preheater on the manifold. It was touching the block at one point but after batteries were unhooked. It's almost like my ECM isn't there! Lights, radio, fan and those things still work. My Edge Evolution doesn't see the ECM either!

Help! I need my truck soon for work! Thanks, Herb

 

Sounds like possibly a lack of power to the ECM. Check all your fuses, particularly your ECM fuse. Have a look around your batteries to be sure no wires go mistakenly left off when you hooked them back up. Am not sure if there's any ground wires in the vicinity of the work you were doing that may have become dislodged?

 

Hi. I found the ground to the ECM was loose at the battery terminal which killed the ECM. I had the batteries returns still loose just in case I needed to unhook them quickly. Now I'm able to clear all the codes but it won't start. It now turns over fine though. I can faintly hear the injectors clicking as they should. How long does it take to get fuel into a new injector install? I know all the feed lines were off during this process. On the older engines you need to bleed off the air but I was told these you don't.


Any advise? Thanks, Herb

 

You just need to cycle the key to let the lift pump run, three or four times. Can you hear the lift pump run? It should start, if not you have a issue with your injector install. Loose or misaligned connector tubes.

 

It sure would be nice if you had a fuel pressure gauge at the high pressure pump banjo, wouldn't it!

 

I GOT IT RUNNING AGAIN! I removed the supposed bad injector that I replaced the solenoid on. I did cycle the key three times to do the fuel prime sequence! Replaced it with one of my original injectors and it started right up! I took the new solenoid that I put on the other injector and put it on the original one I used while out! Thank you for all advice and help!

 

Glad to hear all is well.