I went there for 2 reasons. First, I don't know a good mechanic and second, the service adviser misquoted the cost to replace all 8 plugs and coils. Of course, I made them honor the low quoted price. They were not happy, hence the reason I am on here getting advice as to what is wrong before I...
Thank you all for your help... I would have to assume that the plugs were Motorcraft, since I had the work done at the local Ford dealership.. I never had a check engine light on, but when they hooked it up to their computer they said that I had 4 coils malfunctioning and suggested changing all...
Thank You, Andy... I appreciate the info about message center mileage. I will run it for 500 miles and manually check mpg as well. When they hooked up their computer it showed that I had 4 bad coils. I told them to replace all 8. They agreed that it was the best option. They said the wires...
Let me start by saying I don't know much about cars, so I always take my cars in for service. I just had all 8 plugs and coils changed on my 05 Expedition. It has stopped misfiring and running rough at idle, but now has no power.. Also, the mpg used to read around 15.1, now is stating I am...
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