dremd

Year: 2001
Vehicle: E-350
Engine: 5.4
Miles: 134,000

Previous services:
Oil Every 4,000 miles
Plugs @ 100,000 Miles
Injectors cleaned (at injector shop) at 100,000 miles
Air filter at 100,000 miles
Transmission fluid at 40,000; 75,000, 100,000 miles

Overall it has been a highly reliable Van!

Yesterday I was forced to drive it to the grocery store (Diesel Vw was blocked in) When I came out it wouldn't start (not even try). Towed it home.

Today My truck is not "running"; but IS starting and Idling for a few seconds. Occasionally it will run + Rev up with load but the vast majority of the time it dies if you apply any load at all(a/c, in gear, depress the accelerator).

So far I have replaced the Fuel filter; and installed a fuel pressure gauge.

Fuel pressure with engine off (no Vac) is ~40 psi, idling it is around 33psi. I pressurized the vacuum port on the FPR and I was able to get fuel pressure up to 90psi. I also tried forcing the Fuel pressure to 42 psi then starting nothing changed with 42 psi.

Based on above I have pretty much ruled out fuel delivery.

Current thoughts are
1) Crank position sensor (no real basis, except suspicion)
2) Bad/ poor injection pulse (need to test with noid light.)


ANY AND ALL Ideas are Highly appreciated!

dremd

I haven't been back home yet to work on it; but I did check out AutoZone's website and it looks like The 5.4 uses a Cam Position sensor (not crank). $29.95 in DuraTrash.

I'm considering picking one up and swapping it out if nobody has more ideas . ..

Has anybody on here swapped one out before . . . .

BTW; I forgot to mention in my first post that my SGII shows "No Codes Stored" and I have never cleared any on this van.

Good old Bill

So, if I understand, the engine starts and faulters? It won't stay running?

dremd

You are absolutely correct.

Sometimes it runs for longer than others; but every time (except 1) it dies within 20 seconds (normally 10 seconds).

dremd

Just found out that the 5.4 has both Cam position sensor+ Crank position sensor.

***Hot Linked from AutoZone****; so I don't know how long it will last.



Does that give any insight to anyone?

dremd

Just put a noid light on it.

Starts up nice and bright; runs with bright flashes for a few seconds, dims (quickly), goes dark, then the engine dies shortly after.

dremd

Intake air hose was off! Mass airflow sensor wasn't reading; caused edu to stop fueling.

I hope this helps someone else !

Sublimetime

Reviving this thread. My situation is similar. 2001 Excursion 5.4. My winter beater. Cranks over good, no start. Throw some ether in there and it fires for a bit. I will check the intake air hose tomorrow but need to know where/what to look for. What are the possibilities the fuel pump is bad, or the crank or cam sensors. My apologies for the silly questions but i'm a Dodge Hemi car guy and not overly familiar with these Fords. Thanks in advance.