'02 Escape 3.0L,Runs rough on start up,intermitant miss fire when warm

Asked by Nov 15, 2011 at 08:08 AM about the 2002 Ford Escape XLS

Question type: Maintenance & Repair

Cold starts really poorly,very rough,then once it's warm runs fine.Runs perfect for awhile when driving until you slow down and it lugs or you stop at a light then it starts misfiring and will continue.I've replaced several coil packs on the cylinders I thought were misfiring,but it seems to be different cylinders each time.I've also put new plugs in,sprayed cleaner through the airflow sensor,run high test gas with injector cleaner......Now I'm stumped!!!

2 Answers

5

i would check your cat converter

sounds like a bad IAC,(Idle Air Control),is located on throttle body.

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