I'm stumped
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Senior User
Joined: Nov 2012
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From: Southern Indiana
I'm stumped
Here's the verdict I just did a egr delete and oil cooler in my 6.0 ex I got everything done fired the truck up and it ran like crap threw some INjector codes so I started unplugging injectors to see which one were not firing and when I unplugged cylinder 4 the truck started running better and is firing on all cylinders except 4 when I plug 4 back in it runs on Half the cylinder and like crap again? Ever heard of that what's the fix? Any info helps
Lead Driver
Joined: Feb 2011
Posts: 8,241
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From: L.A. (Lower Alabama)
disconnect the suspect fuel injector connector and test the injector pins for resistance. measure the resistance between the suspected fuel injector pins,component side.
pins 1 and 2 =0.2 to 3.0 ohms
pins 3 and 4= 0.2 to 3.0 ohms
pins 1 and 3=greater than 10,000 ohms
pins 1 and 4=greater than 10,000 ohms
pins 2 and 3=greater than 10,000 ohms
pins 2 and 4=greater than 10,000 ohms
if the resistances are not within specs the fuel injector solenoid is bad and the injector will need replaced.
if the resistances are good you need to check the ficm.
A standard "noid" light from the parts store will work on harness side.
pins 1 and 2 =0.2 to 3.0 ohms
pins 3 and 4= 0.2 to 3.0 ohms
pins 1 and 3=greater than 10,000 ohms
pins 1 and 4=greater than 10,000 ohms
pins 2 and 3=greater than 10,000 ohms
pins 2 and 4=greater than 10,000 ohms
if the resistances are not within specs the fuel injector solenoid is bad and the injector will need replaced.
if the resistances are good you need to check the ficm.
A standard "noid" light from the parts store will work on harness side.
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