I have a 2001 7.3 F-350 that seems to be running on half a motor.
When this first happened I got underneath the valve covers and noticed the passenger side injector harness had a small gap. So I went ahead and pushed the plug in the rest of the way and cranked my truck which began to run fine. Well with that being my problem I went ahead and purchased two new injector harnesses from Ford and the passenger side went back to acting up. Thinking I received a faulty harness I went and purchased another and ended up with the same problem. Ive tried putting the old harness back and that didn’t work either...? I’ve already replaced the ICP, IPR, CAM, and EBPV sensors with motor craft ford parts. Same problem. I started paying closer attention to the passenger injectors and I’m getting no oil squirting out what’s so ever from either 4 injectors, driver side seems to be just fine. I went ahead and purchased an idm and installed that which didn’t seem to help at all. I’m so lost in what could be the problem other then the injectors going out but I find it hard to believe 4 injectors would just drop out from the same side. Is there something I’m missing electrical wise? I’m getting a code that says “injector circuit or idm codes detected” but I was hoping to solve the problem without having to purchase a scanner. Sorry for the long post and if this has been discussed I’ve looked all over the internet looking for a solution and I’m just hoping someone here can help me out. Thank you for any advice you have.

 

All 4 going out, not likely as you said. Probably 1 bad making the IDM shut down the whole bank to protect itself. Unplug and run 1 injector at a time and if the engine runs better you found the bad injector

 

Thank you i will try that right now actually.
when you say unplug and try one injector at a time should I have the truck running each time I connect an injector or should I be turning her on and off each time

 

Well I've never needed to do it, but i don't think I'd want to stick my fingers in there to unplug and replug with the fan, belt, and rockers moving. Safety says unplug, try, kill, plug in, unplug, try, kill....

 

Ohm the injectors with a meter and look for one that is 0.4 ohms or more different than the others on that bank. Sounds like a bad injector solenoid has caused the IDM to shut down an entire bank.

 

also carefully inspect the pins in the valve cover gasket plug and the eng side plug. If there was a gap you could have arc'd or burned a pin and new uvch may not fix the problem.

since you said the driver side injectors are squirting oil I assume you've had the driver side valve cover off so this may not apply but there have been times when the wire harness going over the driver side valve cover to the 42 pin connector has rubbed thru and been damaged. may want to take a look it.

 

I didn’t get to work on the truck yesterday got a little late on me but yes I’ve checked the plug for any wires that may have rubbed through. And I had found one wire a green with red line I believe which I patched up already. I don’t have a ohm meter but I will try unplugging and plugging of the injectors like Wesley Green suggested and let you all know if that’s my problem. Thank you all for helping me out she’s been down for almost 2 months and I’ve been stumped

 

What is the code that you are getting?

 

2 months, ouch!

 

Hey, didn't see the final post on your no start issue! Please let us know what was found or not.