2001 Ford E-Series Van Intake problem/bad acceleration

2001 FORD E-SERIES VAN
90,000 MILES • V8 • 2WD • AUTOMATIC
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LATINPOPEYE
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2001 FORD/E-150/4.6L(V8)/90-K miles
Van stutters when accelerated between 25 and 45 miles per hour.Had 2 injector cleanings in the past 4 years.Improvement was noticed but,short lived.I notice that when I use a gas additive such as a 104 octane booster the car drives great.Regular gas is poor performance,mid grade slightly better,high octane works good.Had car checked by mechanics and no one knows what to do even when attached to a computer.Van drives great at high speeds over 50...please help!!!
Dec 18, 2008 at 9:53 PM
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RYZAN32
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[quote:efa026b108="latinpopeye"]Engine Performance problem
2001 Ford E-Series Van V8 Two Wheel Drive Automatic 90000 miles

2001 FORD/E-150/4.6L(V8)/90-K miles
Van stutters when accelerated between 25 and 45 miles per hour.Had 2 injector cleanings in the past 4 years.Improvement was noticed but,short lived.I notice that when I use a gas additive such as a 104 octane booster the car drives great.Regular gas is poor performance,mid grade slightly better,high octane works good.Had car checked by mechanics and no one knows what to do even when attached to a computer.Van drives great at high speeds over 50...please help!!![/quote:efa026b108]

Have you checked the spark-plugs?
Dec 24, 2008 at 6:07 PM
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