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Mustang Ecoobost Cold Start Vibration in Reverse

eco16

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Apr 11, 2018
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Location
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Vehicle(s)
Ford
A few days ago, I put my 2016 ecoboost mustang in reverse and it started to violently vibrate. I knew I could not drive it so put it back in park and the vibration stopped. I put it back in reverse and everything was fine.

Now 2 days later, same exact thing happened. Each time, so far, this occurs when cold starting the engine. My car has 35,400 miles, right under warranty and also has ford performance tune.

Car now has check engine light with code P0301.

Although it could be a few different things, would ford install new spark plugs that I have purchased or do they have to be ford approved? Also thinking about getting extended warranty now that warranty is about to expire. Is that possible with the ford performance tune? Should I be looking at a trade-in? In respect to the tune, will the tune have to be reintalled and do they need to know about the ford approved tune before changing spark plugs? Few months ago they had to install new evap coil for AC.
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