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2003 ford expedition engine cuts out while driving

Sometimes just cuts out briefly (often while shifing gears) and sometimes cuts out and stalls. Engine starts right back up. No error codes, feels electrical, had a funny smell under the hood when it happened one time.

Any clues?? I saw another post that mentioned a wire harness problem at the power steering pump, but i could moved the wires, saw no problem with shorting, still same problem

saw yet another post that mentioned a problem with the coils

Engine is the small v8 4.6 L

Already replaced the fuel filter, air filter, problem is very random.

Any ideas??

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  • 9 more comments 
  • mario727 Mar 07, 2009

    NO trouble codes, it acts like the key was turned off briefly while running and sometimes just dies, then restarts right up. No errors on any gauges, not running hot, good oil pressure, etc. feels like an electrical problem.

  • mario727 Mar 07, 2009

    response to emissionwiz, please note in my origina posting, no error codes.

    thank you,


  • mario727 Mar 07, 2009

    not sure how to check the fuel pressure, it is an intermittent problem that occurs very briefly then usually corrects itself. it has only stalled completely a couple times and restarted immediately afterwards. we drive it daily and it usually cuts out for apx half a second while driving then comes right back and runs fine. no other indications of failure.

  • mario727 Mar 07, 2009

    I fully understand that there is no code for fuel pressure failure. There is never a crank, no start, only either a quick pause while driving or a couple times the engine quit and re started immediately at the side of the road.

    thank you for your reply, any further ideas? I suspect an electrical failure i.e. short or coils going bad. this is strictly a brief/intermitent problem and we drive the car daily.

  • theboyles Mar 22, 2009

    2000 mercury Grand Marquis Driving about 30 Mph, engine stalls no lights came on. It cranked right up and run fine. Since no lights came on I suspect power outage to the Computer. 

  • Anonymous Mar 27, 2009

    03 expedition cuts out while driving for a split second, has stalled a couple times

  • Anonymous Apr 01, 2009

    03 expedition cuts out while driving for a split second, has stalled a couple times

  • yadayada
    yadayada May 11, 2010

    well of course it's an electrical failure, that's pretty darn sure, try bending around the engine harness, also make sure all engine connectors are tight and locked.

  • yadayada
    yadayada May 11, 2010

    U don't understand, replacing the filter will not keep the pump from shutting off intermittently, u must check the fuel pressure when u have a crank no start to see if it is the problem, pumps don't set a trouble code.

  • yadayada
    yadayada May 11, 2010

    do u have fuel pressure when the eng shuts off?

  • yadayada
    yadayada May 11, 2010

    do u have any trouble codes?



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SOURCE: 2000 ford explorer 4.0 x-engine is stalling, missing and lose power while driving

I personally would check the fuel pressure. Then I would go back to the coil. I have seen brand new bad coils out of the box. The symptoms of a loss of power point to this component, especially if the car idles well, but loses power when accelerating. Please do not rate this reply - we all are left to grasp at straws since you have changed pretty much everything. Good Luck. Please post the final fix of the problem.

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SOURCE: engine cuts out on acceleration

could be the pump or injectors or both. while your at it check your fuel tank for rust dirt any thing.

good luck


Posted on Jan 17, 2009

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SOURCE: ford focus 1.9tdci LX 2002

i have had the same problem (read article 26 jan 09 by terrytrout) i have now solved the problem. i got a fuel rail pressure censor from the scrapyard and for two days now the car has been running perfect. good luck.


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SOURCE: engine misses when accelerating DOWN THE RD

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