i have a 2000 F150, 4.2l v6, 5 spd man tran, 100,000+ miles in excellent condition (all highway miles), maintained beyond required maint sched. my problem is, recently it started to stutter when i accelerate. if i accelerate slowly it is okay, however if i try to accelerate aggressively it starts to stutter bad. No ses light, and i have a new fuel filter, new air filter, plus new plugs, & new wires 2000 miles ago. so whats up with it?



garry

 

Dirty MAF, throttle body, and or intake?

 

fuel injectors or O2 sensor could be bad too. But you should clean the throttle body if it hasn't been cleaned out before.