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I am a small shop owner that mostly does brakes and tires....and I am stumped. That being said, I need some help with a 99 ford F350 7.3 auto that is lacking power and running rough. It has three DTCs, P1271, P1273, P1275 which is an open circuit in the #1#3#5 injectors, wiring harness or a Failed IDM.
I have read that I need to test injector resistance at the valve cover plug, but need a very "kindergarden" explanation on how to do it. Also, what resistance should the injectors have at the valve cover plug and if they ohm out fine, where is the IDM located? and what does IDM stand for? I read it monitors the injectors. You will have to excuse my lack of diesel knowledge, I have no diesel ed and my manuals are junk. When it comes to diesels, they read "bring it to ford"
Thanks, Craig
I have read that I need to test injector resistance at the valve cover plug, but need a very "kindergarden" explanation on how to do it. Also, what resistance should the injectors have at the valve cover plug and if they ohm out fine, where is the IDM located? and what does IDM stand for? I read it monitors the injectors. You will have to excuse my lack of diesel knowledge, I have no diesel ed and my manuals are junk. When it comes to diesels, they read "bring it to ford"
Thanks, Craig