Stutter at high thottle
#1
Stutter at high thottle
Ok well I was told that I was losing my fuel pressure when I would get on the throttle and was recommended that I change the fuel pump well I changed that and the fuel filter and it doesn't do it near as bad and another thing it stutters at low rpms so I have to take my foot off the gas and reapply pressure I can't figure out what's wrong but my mechanic said that it had a pending lean code somebody give me a little insite
#2
Senior Member
More info on the truck? What motor? Mileage? When was the last tune up done?
#3
#4
Senior Member
I used to have a stutter at low rpm's I checked my coil packs, because they were never change. I found two were bad and replaced all eight with accel coil packs. I didn't have the money for the Motorcraft ones, so those will do for now. It fixed my stutter.
#5
great thank you that was gonna be the next thing to look at its time to change the spark plugs and coil packs anyway
#6
Senior Member
yup, time for plugs. While you're in there you should clean your throttle body and maf
#7
Was it throwing any codes? Or how did you find that two were bad.
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#8
Senior Member
Stutter at high thottle
No codes were ever thrown. It's simple, i would disconnect one coil pack and if there was a change in the motor, not running correct, then it was good. If I disconnected and the motor kept on running without any change, it was bad or going bad. It worked for me, I changed out coil 2 and 7 with 1 and 8, and when I disconnected 2 and 7 the engine would run different. When I discount 1 and 8 it ran fine with no change. I then order a set of accel coil packs, couldn't afford all Motorcraft (college student) and replace 1 and 8 with the new ones and the truck didn't stutter anymore. After that I replaced all of them and the truck runs great.