E150 XLT Power Hesitation During Acceleration!

leroge · 02-23-2010, 02:21 PM

As I took to the highway this past weekend, I noticed that my engine ( Trinitron V8 ) 'sputtered' when I accelerated at 'higher' speeds ( 40 - 50 MPH ). Felt like very brief hesitations ONLY when accelerating at 'higher' speeds. It was really noticable when I had the cruise control on and acceleration occured while going up hills, for example. The vehicle has 129K miles and works like a champ. Some facts - (1) gas sending device in gas tank and fuel filter replaced at 100K miles, (2) thought problem was related to either gas line freeze or fillup of different gas formula ( in Indiana rather than Illinois ) but added HEET and GUMOUT to fuel tank but problem continued, (3) vehicle works like a champ at low speeds even when accelerating!

Your thoughts? Approach to diagnose?

leroge · 02-24-2010, 09:58 AM

Eleven views and no ideas? C'mon auto mechanics, how about some thoughts!

rhandwor · 02-28-2010, 08:46 PM

I used a can of Winn's intake cleaner. I used a can with a valve on it and used a small vacuum hose on the intake. I just added enough to keep from stalling. I also installed new plugs on my 1997 5.4L F-150.
Egr problems will also cause problems.

GET HEALTHY AFFORDABLE DOG FOOD

DEVELOPED BY THE AUTOMOTIVEFORUMS.COM FOUNDER & THE TOP AMERICAN BULLDOG BREEDER IN THE WORLD THROUGH DECADES OF EXPERIENCE. WE KNOW DOGS.

CONSUMED BY HUNDREDS OF GRAND FUTURE AMERICAN BULLDOGS FOR YEARS.

NOW AVAILABLE TO THE GENERAL PUBLIC FOR THE FIRST TIME

PROPER NUTRITION FOR ALL BREEDS & AGES

POST REPLY TO THIS THREAD