have you ever changed the fuel filter ?
round about 40mph
Clutch fan
i have a 2003 ford focus zx3 when going down the road even at differet speeds at times it vibrates and starts to studder for a 3 or 4 seconds then the car resumes back to normal speed it almost feal like its cutting back
see if the transmission is downshifting properly
not 100% sure, but check your fuel pump
I have a 2003 mercury grand marquis will sputter around running 35 - 60 mph ?
It depends on what you did to the car.
Because it's careless
The 2003 Ford Focus has 16 valves.
The 2003 Ford Focus has an inline 4 engine.
The 2003 Ford Focus is a gas-powered vehicle.
The 2003 Ford Focus has a 5-speed manual.