2005 Ford Focus ZX4 "faulty engine idling" Questions

spark ok... yet the engine idles rough. Thoughts please!!!! Thanks!!! Mike Ignition misfire, leaking intake gaskets, faulty fuel injector. Is the check engine light on and blinking with engine running

...engine is cold or hot. without using the gas pedal the car will reach speeds of 45 mph. It sounds very much like the idle air valve is faulty as I have just had same sort of problem I fitted a new ...

2.3 doc 2002 ford focus engine lopes at idle possible causes If the idle speed is not steady, you could have a vac leak, a dirty throttle body, or a faulty idle air control valve.

rough idle, engine dies and rpm's flucuate when not pressing gas pedal Vacuum leaks. Leaking EGR or plugged PCV valve. Faulty idle control sensor.

...when cold My 2003 Focus runs idles very rough but smooths out when warm. Anybody have any ideas? This could possibly be a faulty engine coolant temperature sensor. these sensors are prone to

...engine light) illuminates. Causes: A P0507 DTC trouble code may be caused by one or more of the following: * A vacuum leak * Leaking air intake after the throttle body * EGR valve leaking vacuum * A ...

...sounds like a faulty idle air control valve or dirty throttle body.The computer adjusts idle speed by the control valve and how much air it lets into the intake.Is the check engine light on

when slowing down for the lights and car in neutral engine continues to rev loud sometimes it revs loud when changing gears too idle control valve or IACV will be faulty, a common ford problem.

engine light goes on,stalls,start again same thing again ,then to compensate add alittle throttle,it also dies until you hold it to 17oo rpm till it warms up,not to sure to look? You have to check the

...engine engages. No.  The coil would have nothing to do with a low idle speed.The computer controls idle speed by regulating the amount of air coming into the intake thru the idle air control ...