My engine seems to run normal when idling... usually idles around
800rpms... but when driving the engine stutters, notably when I am cruising around town (under 40mph, and between 1000-2000rpms)... however when I am on the highway or going at speeds faster than 40mph the engine runs smooth. I have a 2001 focus ZTS, just had plugs & wires done and the fuel pump replaced. I'm not sure what the problem could be - mechanic says nothing is coming back to him on the diagnostic computer... Thanks for your help!- posted
16 years ago