Engine stall at speed- no code

[Rockclutch]

04 EB 5.4 2v

Engine cuts as if no fuel, but able to restart after shutting off ignition.
No fun on the freeway.

Completely random.

Fuel pump taking a nap?


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[1955moose]

Could be. What year/engine? Always post that. If it's an 05-06, look at fuel pump driver module up near spare tire. Do a fuel pressure test also. Pressure should be 28-45 running . Do you have a hard time starting after shutting off for more than 5 minutes? Let me know.

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[Rockclutch]

Thanks Moose

2004. 5.4L 2v
120k mi

Sorry for not adding that.

No trouble starting, but occasionally rough idle at stop lights.



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[1955moose]

2004 doesn't have the fpdm, so rule that out. Do the pressure test, and run a dtc codes test. You might have other problems. The 03/04 are famous for the fuel pump relay soldering come loose. That also is an area to check.

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[Rockclutch]

Yeah, I suspect the infamous fuse box issue may be at play here. This has been an intermittent issue for the last couple of years, maybe 6 times total in 40k miles.

Truck is really in great shape and usually trouble free.

I'll get under it and start testing when my northern California ground dries up a bit.

Amazing amounts of rain this year....maybe I just need a boat.

Thanks for the input, I'll report back my findings.

Cheers

Roc

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[1955moose]

Where you at in California? I'm in Daly City, just south of SF.

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[TobyU]

I'm a Town Car guy so please tell me about this infamous fuse box issue.
I have an 03 Navi and have to keep an ear open for potential probs.
I did have a sunroof leak that was running toward and by the gem I think they calll it at the passenger side foot area but no water on mine.

 

[1955moose]

Toby, no Gem past 02. 03 went to the single box in the passenger kick panel. They started soldering in the relays in 03. The fuel pump relay is the one where it causes the stalling problem. Best bet is resolder your old connections, the replacement ones are trouble. They didn't make just one for 03, and 04. Members here that tried a replacement one, always seems to have problems after.

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[Rockclutch]

Wow, Moose, I'm here in 'sunny San Jose', we should meet up sometime.

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[1955moose]

Sounds good. I'll have to let you know when I'm heading south, or you North. We'll have a couple of cocktails at my Lake. Shoot me a pm, I can give you phone #.

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