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Car stutters at WOT...why?

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Old 08-27-2009, 09:50 PM
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Default Car stutters at WOT...why?

It idles great, runs smooth but when i go WOT getting on the freeway or going up a hill the engine stutters and jerks alot, i have to let of the throttle and slowly increase my speed.

I have replaced the fuel pump but it did not fix the problem, what else could it be?

Thanks for any help guys!!
Old 09-02-2009, 09:31 PM
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well...interesting...i'm just brainstorming, but check some of these things:
EGR valve, Ignition timing, air filter (clean or dirty?), fuel filter (should have done this when you changed your pump). also helps to know what setup you're running.
Old 09-02-2009, 09:38 PM
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First thought is fuel filter.
Old 09-04-2009, 03:17 PM
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car is 93. 5.7L Auto completely stock. I changed the fuel pump, fuel filter and cleaned the air filter. I just added some fuel system cleaner this week to see if that helps clear anything up.



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