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Thread: HELP, STRANDED - 5.0 Stumbling, No Power, Dies -

  1. #1
    Registered User CMC 289 JonnyD12GT's Avatar
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    Default HELP, STRANDED - 5.0 Stumbling, No Power, Dies -

    2012 Must GT

    Took it up to Milwaukee last night for Milwaukee Street Drags at the WI State Fairgrounds

    After some good runs the car developed a studder, at idle, or any rpm
    depressing throttle does nothing, car just sputters, and dies.
    Car has zero power, will not move when this is happening.

    But it is very intermittent. Comes and goes.
    When its NOT happening for that moment, the car is perfect; full power, smooth, and idles fine.

    No check Engine Light comes on.

    Car is still up in Milwaukee, I had to leave it overnight.
    Trying to get it sorted out.

    Any thoughts?? Please Help!
    - Jonny D

    Candy-Red 2012 GT, Saddle Leather, Brembo Package Car, 6-Spd w/ 3.55's
    AirRaid CAI, BBK 85mm TB, JBA X-Pipe, GT500 Mufflers, Ford Racing Pro-Cal Tune.
    Ford Racing Short Shifter, Ford Racing Boss 302R Lower Control Arms.
    Best E.T. to date 12.27 @ 116.0 with a 1.95 60ft.

  2. #2
    :) CMC Boss460 INDY's Avatar
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    Just throwing idea out there, but have you checked the MAF again? I know you had issues somewhat recently.


    Did you bounce the rev limiter? OPG gone?

    Good luck man.

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    Senior Member CMC SuperCobraJet 8urvtec's Avatar
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    MAF.
    2012 Ford Mustang 5.0
    2017 Jeep Wrangler
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  4. #4
    Registered User CMC 289 JonnyD12GT's Avatar
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    Thanks for help guys. This wasn't getting sorted out in the parking lot or side of the road.

    Fuel Pump Control Module went out. $250 parts and Labor.

    Thank you Braeger Ford in Milwaukee, WI
    - Jonny D

    Candy-Red 2012 GT, Saddle Leather, Brembo Package Car, 6-Spd w/ 3.55's
    AirRaid CAI, BBK 85mm TB, JBA X-Pipe, GT500 Mufflers, Ford Racing Pro-Cal Tune.
    Ford Racing Short Shifter, Ford Racing Boss 302R Lower Control Arms.
    Best E.T. to date 12.27 @ 116.0 with a 1.95 60ft.

  5. #5
    Registered User CMC 281 ATRAIS's Avatar
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    Damn, sorry to hear about the car troubles man
    Glad you got it sorted out! We should do another cruise soon.
    2013 GT Premium Track Pack 6M
    BMR LCA's, Barton Shifter Bracket, GT500 Mufflers, 275's, tuning by AED
    2007 Fusion SEL AWD daily
    "It's not what you drive, it's how you drive it"
    -Clarkson

  6. #6
    Registered User CMC 289 JonnyD12GT's Avatar
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    Still need help guys, Any inputs would be appreciated.
    The problem has returned.

    After driving around for awhile, completely intermittent and random, the car just sputters, and dies.
    Car has zero power, will not move when this is happening.
    When its NOT happening for that moment, the car is perfect; full power, smooth, and idles fine.
    No check Engine Light comes on.

    Car is now at Friendly Ford in Roselle IL and they have been unable to diagnose the issue positively.
    The car is storing a "FUEL SYS OPEN CIRCUIT CODE" but nothing else.
    They've had it for a week, and since the fuel pump control module has already been replaced,
    their best recommendation is to replace the fuel pump and sender assembly.
    They're est is $990+tax. But I can get motorcraft fuel pump/sender assembly for $300 on amazon and install it myself.
    But I am not convinced its the fuel pump assembly.

    I'm picking it the car up from them today without any resolution, and without any guarantees it'll even make it home.
    extremely frustrating, and just trying to find somewhere that can help fix my car.

    Any thoughts? Please share. Thanks,
    - Jonny D

    Candy-Red 2012 GT, Saddle Leather, Brembo Package Car, 6-Spd w/ 3.55's
    AirRaid CAI, BBK 85mm TB, JBA X-Pipe, GT500 Mufflers, Ford Racing Pro-Cal Tune.
    Ford Racing Short Shifter, Ford Racing Boss 302R Lower Control Arms.
    Best E.T. to date 12.27 @ 116.0 with a 1.95 60ft.

  7. #7
    ^ Amateur Using Nitrous Oxide CMC Event Coordinator MGLT's Avatar
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    What do you have for modifications?
    -Matt

    2012 Mustang Boss 302 - Garage Queen Edition
    1990 Mustang 5.0 LX - Round the block race car
    1988 Mustang 5.0 GT

  8. #8
    Registered User CMC 281 ATRAIS's Avatar
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    I wouldn't take it to a dealer unless it's under warranty. Otherwise I'd take it to Hans at Dean's Performance since you're so close to him, he's a Flipping Mustang wizard.
    2013 GT Premium Track Pack 6M
    BMR LCA's, Barton Shifter Bracket, GT500 Mufflers, 275's, tuning by AED
    2007 Fusion SEL AWD daily
    "It's not what you drive, it's how you drive it"
    -Clarkson

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