Spent last Tuesday chasing a phantom misfire on a 6.7 Powerstroke

Checked injectors, compression, fuel pressure, even swapped the ICP sensor - turns out it was a chafed wire hidden behind the valve cover harness that only grounded out when the engine got hot. That damn wire took me 6 hours to find and I was about ready to set the truck on fire. Anyone else ever have a wiring gremlin that made you question your whole career choice?

3 comments

3 Comments

kevinw9415d ago

I read somewhere that 90% of electrical issues on trucks this age are actually ground problems or chafed wires, not bad sensors. I had a buddy tell me he fought a stalling 7.3 for THREE MONTHS before finding a rubbed-through wire under the fuel bowl bracket. That's the kind of thing that makes you stare at the toolbox and wonder if you should've just become a dentist instead. At least when teeth break you can SEE the problem, you know?

casey26815d ago

You ever spend 2 days chasing a short in the taillight circuit on a 2000s Ford van? That was me last fall, turns out the trailer wiring harness had rubbed through inside the bumper and only shorted when it rained. I felt your pain about wanting to set it on fire, I was ready to turn that van into a planter.

kai_ramirez3815d ago

Man tell me about it, I spent a whole weekend chasing a taillight short on my old F-150 that turned out to be a ground wire that corroded inside the frame rail. Isn't it always the dumbest hidden thing that makes you want to throw the whole truck in a dumpster?