I have a 2000 Ford Focus. Over the weekend, my son and I changed the spark plugs. Now, when the car is in park and idling, it slows down and dies in about a minute or two. Same thing when I am stopped at a red light. I changed the spark plug wire set, not much better. When travelling, the car runs well. Could I have a bad spark plug or perhaps I gapped the spark plugs wrong? The car did not do this before changing the spark plugs.
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Monday, December 6th, 2010 AT 3:32 PM