My truck starts and runs fine if I have it plugged in, it has new glow plug, new gaskets and wires, all motorcraft, ive swapped out most of the other electronics such as the ecm, pcm, something that starts with an I and my parts work in the other truck, same issue with my truck. But if I plug it in a few hours, it starts up fine and is good for the day.

My SCT Livewire randomly loses power, won't turn on. The lighter port stays working and the fuse doesn't blow. So far literally taking the fuse out and putting it back in restores power. While there is no power I test other devices and they don't get power either. Anyone know what that's about?

2 wks ago hauled a 40' trailer no problem. Parked it in the driveway, tried to start it 3 days ago, no power anywhere, not even a flicker on the dash. I hooked up a trickle charge for 2 days, still no power. One battery is 3mths old, the other is 2 1/2 years old. All 4 terminals are clean and connectors are solid and tight. No evidence of any cable problems or corrosion, the ground is also solid and no evidence of break or corrosion.

Drove 10 k parked it for an hr. Started it up and it ran for 10 min. Then I was backing out and it just shut off. Still have power, it cranks and tries to start but won't. Fuel is getting to filter from pump. I replaced one 20 amp fuse for the diagnostic port believe it was fuse 12. Really don't know. Oils old and a bit over full but it's been running fine like that. Also transmission cooler line is leaking and some oil leaking from somewhere just behind fly wheel or some belt center of truck by oil pan. Not a mechanic at all any help would be appreciated. Might be a HPO Sensor for pump or the high pressure oil pump itself. or injector issues ?

Once the truck warms up and put in drive it will barely run. If you're in park you can Rev it up and it's fine. I've replaced plugs, coils, fuel filter, air filter, and injectors. I also drained the old gas as it had been sitting, washed and dried the tank completely and refilled with new. I checked the fuel pump and it runs perfectly fine but I'm stumped.

Fuse 5 under the hood on the hot side reads 12v once I hook up the fuse voltage drops to 7 volts. OBD port has power but will not power up a obd reader.

I have a check engine light that lasts for about a minute after start up, and it sounds like my torque converter is knocking. As soon as the check engine light turns off i’ll have no issues. I can’t put it in gear while light is on. No flashing OD light just check engine light on

I cannot find the horn relay component or is the fuse the home relay. My horn does not work. I changed the old fuse out and the horn still does not work. The fuse is a 20 amp & is #11 on the board

I installed switchback LEDs on my 2014 F250 and have a very odd problem
I have installed resistors and that has fixed the hyper flash but another issue is driving me crazy
When the ignition is in run but the truck is not started the switchback LEDs work exactly as they should white running light amber signal and hazard. Great looks amazing!

Now the problem as soon as I start the truck and turn on the running lights the white lights work but don't switch to Amber when signalling they don't flash at all
When I turn off the running lights the LEDs flash. Sometimes Amber sometimes white sometimes both colours intermittent

Why is this and how do I fix it