Have a '01 F-250 w 5.4L

Truck will crank but won't start- will run on starting fluid.

Have changed fuel pump relay, fuel pump, fuel filter. Crank sensor.

Have checked inertia switch on passenger side.

Truck isn't getting fuel pressure while cranking. I can see that on my scanner.

I'm at a loss. Anything to check?

I don't have manual for truck.

thanks

 

I had the same thing going on with my 2000 f250; the fuel pump wasn't turning on to pressurize the fuel rail when the the key was on - engine off. This is what I know and what's working for me:
- put a test lamp on the green/yellow wire going to the inertia switch.
- turn the key on but don't start. The test lamp should light up for a few seconds indicating the fuel pump is priming the fuel rail.
- if the test light doesn't light up you're not getting power to the fuel pump.
I replaced relays/fuses and finally figured out it may be something going on at the key tumbler. I removed the tumbler, sprayed some contact cleaner and reinstalled. It now starts. Try wiggling the key when when it is in the key-on engine-off position; see if the fuel pump kicks on.

 

Wire check/connectors etc...you have to get a wiring diagram before you put a new engine and computer in there and it still won't start.
Don't know what to think about the tumbler thing...

 

I still cant figure mine out. It's got fuel at the Schrader valve on the rail when I turn the key.


I took one of the plugs out and attached the coil and cranked it and got spark.


Replaced the cam sensor also.

Not sure what else It could be?

 

Check fuel driver modual. Drivers side, rear crossmember to frame corner, some have a tin cover over them, some are open. They are about 3 X 5 in, usually are corroded from road crud( a definite dumb spot to put an electronic modual) bet you find its badly corroded. Replace unit. About $110 Canadian. ( local parts store) hope this helps.

 

Same here with 2001 F-250 with 5.4L. Sometimes it starts, sometimes it doesn't. I thought it was frozen fuel but have treated it till I'm blue in the face and also sometimes it won't start even when it hasn't froze. Definitely not getting gas because it will fire with starter fluid. My key switch does have issues because the ding, ding, ding sound goes off even when the key isn't in the ignition. My underside is also heavily rusted so the fuel driver module could also be the issue. How do you take the tumbler apart?

 

01 Super Duty trucks do NOT have a puel pump driver module.

That's just the warning that the key is in the ignition, it doesn't have anything to do with anything else. If it bothers you and you want to solve it permanently, just clip the wire that goes to that terminal on the underside of the switch. IIRC, it's purple with a black stripe.

 

Yes, I know but it does it when the key is not in the ignition! One guy thought the problem was related to something being jammed up with his key tumbler, that's why I mentioned it.

 

Yeah, I know. It thinks you left the key in there when you got out.

I've cut that wire on both F-series trucks I've owned (for that exact reason).

 

So, dumb question. Have you changed the fuel filter?

 

An engine needs 3 things to run.
Fuel,
Fire,
and Air


This one got mouse'd. It was suddenly hard to start and ran rough. The air filter housing was stuffed full of debris so that the filter was choked out. This pic doesn't show all the debris, a bunch fell out after it was opened.

 

I have not. I was going to do that, but it didn't seem to fix anyone else's problem. Last night I sprayed the tumbler through the key hole with electronic cleaner and then a lubricant. That didn't work. What fuse number in the book is the fuel pump relay? I see a PCM Relay Coil fuse on the inside fuse box - positions #30, and I see a 20 amp fuse in the outside box labeled fuel pump relay coil, mass air flow sensor, fuel injectors, in position #5. Is that what needs to be replaced or is the actual coil somewhere else?

 

So there is no way to actually fix the problem without cutting the wire?

 

Are the plugs dry after cranking? Does it always fire right up with ether? Does it ever try to start like low fuel pressure? Is the fuel pressure up to spec? Do you have a gauge? did you plug in a fuel injector circuit restore light tool to see if it flashes?

 

I haven't checked the plugs. Yes, it always fires up with ether. I don't have any gauges or anything like that.