should i have to change fuel.pump and fuel filter?? - Mustang Evolution

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Old 11-09-2011, 08:10 AM   #1
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should i have to change fuel.pump and fuel filter??

I found when i push gas pedal the engine is not react quickly...
What would be the problem??
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Old 11-09-2011, 08:41 AM   #2
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Has it been like that since you had the car or did it start doing it after a while?
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Old 11-09-2011, 10:40 AM   #3
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Actually i bought this car as used one.. So i dont know when it started.
But on the high speed they respond more quick...
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Old 11-09-2011, 02:45 PM   #4
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Maybe try some Carb cleaner on the throttle body. Maybe its sticking or something.
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Old 11-09-2011, 04:13 PM   #5
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Im willing to bet you've got Carbon buildup. You need to either clean your fuel system yourself, or take it to a decent shop and have them do it. Be sure you do it right- some parts may have to come off and be cleaned by hand. But don't let anyone talk you into idiot fixes like pouring water into the carb. , or driving it out. Just google 'carbon buildup' and you'll find what you need.
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Old 11-09-2011, 04:33 PM   #6
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Thank you!!
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Old 11-10-2011, 04:18 PM   #7
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Re: should i have to change fuel.pump and fuel filter??

This "lag" is an emissons related program point in our cars, it's done to keep emission spikes out of the equation when apruptly changing trottle position. It can be removed by a tuner. Everybody I know with the factory programming complains about it..........
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Old 11-10-2011, 05:38 PM   #8
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Quote:
Originally Posted by 05bluestang
This "lag" is an emissons related program point in our cars, it's done to keep emission spikes out of the equation when apruptly changing trottle position. It can be removed by a tuner. Everybody I know with the factory programming complains about it..........
+1 this correct. In each of my three programs in my chip the throttle response is progressively better as the tunes get more aggressive. Even on the stick type tune it is better then no tune I know this as fact because I drove mine for a month with out the chip, and this is an issue with any Mustang not just the newer ones.
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Old 11-10-2011, 05:38 PM   #9
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Also if you do some searching around the site you wi see your are not alone.
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Old 11-10-2011, 08:38 PM   #10
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Smile Re: should i have to change fuel.pump and fuel filter??

im already not alone! lol:
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Old 11-10-2011, 09:59 PM   #11
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Originally Posted by jmpark527
im already not alone! lol:
Check out www.americanmuscle.com for tuners! They do free tunes for life meaning when ever you add mods they will update your tunes for free!!!
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Old 11-11-2011, 10:38 AM   #12
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Re: should i have to change fuel.pump and fuel filter??

yes I will! thank you!!
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