2003 Ford Taurus SES Misfire only at idle
I have a 2003 Ford Taurus SES with the 24 Valve engine. It started misfiring about a month ago and the trouble code reads cylinder #3 misfire detected. It only misfires while idling, under acceleration there is no loss of power at all. Driving on the highway the misfire is never felt, but when stopped at a traffic light for example you can feel it misfire, but it is still random, not constant.
I have changed the fuel filter, spark plugs, wires, and took in to have the fuel system cleaned but still it misfires when idling.
Any suggestions or ideas?
Thanks.