04 expedition wont stay on.

[Sarahjo]

04 expedition with 215000 miles. The past month or so while driving at any speed, it would randomly jerk. Ran my codereader , and it said pcv valve. I replaced that, and it didn't jerk for at least 2 weeks. Then pulled p2198. I replaced bank 2 sensor 1 o2 sensor. It started right up and idled super good for a couple minutes and died and now won't start. I know sometimes the maf sensor can cause it to drive bad and throw codes for 02 sensors. I replaced that. I had the fuel pump and filter replaced 2 months ago. Any ideas at all from you wonderful folks? I can't afford to put it in the shop right now so I'm trying to figure this out myself... and failing.

 

[Sarahjo]

Update: broke down and towed it to the shop. It's the fuel pump again. Luckily I'm still under warranty.

 

[Sarahjo]

Another update y'all, put a new fuel pump in, and still won't crank. Back to the drawing board.

 

[Sarahjo]

Now they say they think it's the fuse box.

 

[Yupster Dog]

Now they say they think it's the fuse box.

Well known problem. Here is a thread on the subject. (it's a sticky in the 2nd gen section)

Another fuse box replacement ....

Just replaced my '03's fuse box again. The second fuse box was installed in January 2014 due to the typical melted fuel pump relay and PCM relay. It was manufactured in November of 2013 but still had the old 15 amp Osram fuel pump relay and other micro relays just like the original '03 fuse box...

www.expeditionforum.com

 

[Sarahjo]

Fuse box has been replaced, still won't crank. This has gotta be fuel related. The fuel pump is turning on when key turned to on position.

 

[Hamfisted]

When you say "crank" do mean it won't turn over at all? or it just won't "start" and run? Any DTC codes stored in the computer?

 

[Sarahjo]

Sorry. Will crank, won't actually start and run. No codes at all. Having to pull in 2 ford "specialists" from what I'm told. Hell, by the time this is said and done, I'm going to be a specialist.

 

[Sarahjo]

Ok hopefully the final update, the ECM was bad. They worked on it until 10 last night and got it replaced. They said it's fixed.

 

[Sarahjo]

Well i got my expedition back today. She runs so good, BUT now the adv track won't turn back on, none of the doors lock unless you manually push the locks down, and the back door won't open, i guess bc maybe it's locked since the lock/unlock buttons won't work? I took it right back to the shop.