I've got a little problem I need some help with ASAP.
My brother has a 2001 3.0 ranger. About 90% of the time if you give it 3/4 to full throttle it starts bucking back and forth real bad until you let off the throttle. Its the worst if you punch it around 50-60mph.
I'm pretty mechanically inclined, but I'm kind of at a loss here.
I've changed the plugs, wires, coil pack, air filter, gas filter, PCV valve. The tune up seemed to help, but definitely didnt fix the problem.
I found this thread, but didn't really get any definite answer..
Any help is appreciated guys