is it normal
My truck vibrates when idling at a red light could be the problem what could be
the problem for this I've been told that it's a normal vibration by the dealership
but I don't agree with that can you help me
My Ecoboost 3.5 in my 2013 has a very slight roughness to the idle. If it is running okay and you have no check engine lights it is probably just fine. Sometimes changing the sparkplugs will smooth it out. Plugs are an easy 1 hour or less job on these trucks. Mine has been trouble free in 45,000 miles.
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