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Repair guides and support for the fourth generation of Ford Mustang, including the Mustang GT and Mustang Cobra.

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Have low fuel pressure

Have changed fuel pressure sensors on fuel rail and on gas Tank .Have changed fuel pump .cranks after priming (turning key on and of 3 times ) and ideals if you press the accelerator like normally taking off it will die if you put it in gear and press the accelerator it will die if you slowly float the accelerator and park it will rev up all the way to 3500 RPMs but once you put it in here and mash the gas to go it stalls out. When you just crank it and let it sit there and Auto it autos for a while then it will all of a sudden start missing bogging down and die

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@martyleesmith what exact year and engine size is your Mustang?

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I had a suburban that acted like this. Had me chasing ghosts thinking it was fuel. What fixed it for me? Oddly enough.... spark plugs. It would fall flat on its face unless i was in park. Then I could get the revs up a bit more. I replaced the fuel pump, filter, all that jazz. No difference. Then I replaced the plugs, and it immediately stopped all of that.

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Marty Lee Smith will be eternally grateful.
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