Question about 2005 Ford Mustang

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2005 Mustang GT idleing problem

I have a heavily modified 2005 Mustang GT (w/ Supercharger, Nitrous System, ECM reprogramming) that has run well for 3 years. Recently, it fails to idle after I start the engine. The problem is intermittent. The engine will run fine as long as the accelerator pedal is partially depressed. If I let off the accelerator, the engine will die or breifly vary between 200-800 RPM before dieing. Ford replaced the throttle body/throttle body sensor under warrently 2 years ago. Is this another throttle body sensor problem or something else?


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  • Anonymous Mar 13, 2014

    dies while in idle. runs fine when in motion. idles rough. possible issue with Throttle body carburetor, filter was very black and dirty.

  • Anonymous Mar 14, 2014

    how to relearn throttle body 2005 ford freestyle

  • Anonymous Mar 26, 2014

    I swapped engines in my truck.it has been sitting for about a year.it takes forever to start.and will barely run when it does.dies if you give it throttle.but will tev sometimes.the engine tan great in other truck.what could be the problem

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  • 521 Answers

May be it the problem of another throttle body.also check the ignition switch.

Check all of the battery terminals and cables and check the wires on the starter/selonoid, start from the battery and follow the cable out and check all conections , clean and tighten them and if it still does it the starter/selonoid is bad and needs replacement...

Posted on Aug 25, 2008

  • tech expert12 Aug 25, 2008

    pls do rate the solution

    thanks.
    regards.
    fixya expert team

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