03 expedition giving me fits!!!!!

[ultraclassic87]

bought my 03 from original owner back in july, got a pretty good deal, or so i thought. test drove it fine. get it home, and notice while driving around, the stereo and all power windows quit working at the same time. this may happen twice an hour or as little as once every other week. i swapped out the old relay for a new one....no change. any suggestions???

 

[ultraclassic87]

also have what i think is a fuel pump issue.....sometimes, its very difficult to start. has never failed to start, just sometimes requires a bit of cranking. along with this problem, while driving in overdrive and overdrive only, every now and again, i get a small jerk( sort of a hesitation), click it out of od, no problems at all...any answers?

 

[ELVATO]

Try changing the fuel filter for the hard start issue.

 

[Butch Smith]

Got to be a loose connection somewhere.

 

[Arshag]

it's not the fuel filter. Dont waste your time with that. I'm still looking for the cause. Here is what I posted in another thread:

OK, my starting problem has nothing to do with the coils. It will start right away when cold - even if it has been sitting for two days. It starts right away when hot, but if it's been sitting for more than 20 minutes, it wont start for at lest 4-5 seconds of cranking. Turing the key on and waiting does nothing. Turning the key on for a second and then off - then on again and engaging the starter does work.

There is no problem with fuel flow since I go full throttle to 5k rpm in third with not a single hesitation. Yes, I have changed the IAC, the TPS, fuel filter, cleaned the injectors and looked for stored codes. Nothing helped.

One item of note that is leading me to believe either I have a sensor drift issue or maybe I need a reflash is the fact that the neutral rev limiter the truck used to have at 4 grand is gone. I can rev the engine to valve float if I desire in neutral now. Not that I do this, but it is a weird piece of evidence.

This issue started around the 80k mile mark (now at 125k)

 

[midsouthduck]

I'm going to go with an open circuit in the electrical system. Since you got problems everywhere, I'd look at the ground circuit/lug from the fuse block and/or ECM. When you're running the stew outta it, lots of current flow that might make it across the open. Maybe the ground lug(s) got a little loose, then moisture crept in and now rust/corrosion is the culprit.