Originally Posted by Wanderer-RRORC
7.3 powestrokes WILL RUN without a fuel pump. The injectors can siphon feed themselves. I found this in only one reference on line after I changed my fuel filter as part of diagnosing and possible reasons why it acted like it was starving for fuel.
Turned out I had a broken wire to the fuel pump. Fixed it... after 9 days of full trouble shooting and waiting for my BAXF ODB2 reader so I could run a full diagnose.
Glad it was a cheap fix..but wanted to share that those motors are so damn TOUGH it would run by feeding itself fuel!!
Yikes! Glad it's fixed now...
While in the middle of a bunch of other upgrades, I was under my van a couple weeks ago, and noticed some previous shop / owner electrical butchery. I saw it before, but never really investigated. I wound up completely rewiring my dual tanks selector switch.
I Never had a problem with it, but as I pealed back the black electrical tape, I uncovered the usual shadetreemechanicock****ery, with crimps for the wrong gauge wire, wires looped some around this way, some around that, and spices with nothing more than bare twisted wires hidden under electrical tape (what? they ran out of crimps?). Oh, and my favorite, green fuzzy copper wire. Even the hose clamps were carbon steel and rusting, instead of the good stainless ones. Greaaaaaaat.
Its as though some talent-less (and connector and soldering gun challenged) 'hack' was paid to change out a bad selector valve, probably got paid 2hrs flat rate for 30 minutes spent (tops) of bullshit hackery electrical that could have been better done by Ray Charles. Ray Charles on a bad day! Paste, patch, and run....
I spliced into the harness with some new wire, soldered and shrink wrapped everything, new spade crimps at the valve, new clamps, trying to avoid a scenario like the one you just had, and that I've had a few times with past vehicles.
Didn't mean to rant in your thread, but when ever I see someone trying to chase down what turns out to be a broken wire (maybe from a previous repair/) I think back to when this 'ASE trained veteran mechanic' was helping me remove a dash from my new truck, he tugged and stained that harness so much i stopped him, I thought it was going to break.