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Rough idle and acceleration

mrichard02

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2024 F150 Power Boost Lariat
2024 F150 Powerboost 3.5L

Truck is in park, and if I accelerate between 0 - 2000rpms the entire truck will shake (engine shake). Does not matter if I am in normal mode or even sport mode. Any mode the engine will shake from the acceleration. My guess is its a cylinder mis-fire but don't know enough to be sure. Maybe a cylinder is not firing causing the engine to shake?

I also noticed, having driven other powerboosts, that mine seems to feel like it has less power than the other powerboosts i've driven. Mine drives slower, more laggy vs the other powerboosts ive driven are far more responsive and powerful.

Took it to dealer they said no codes threw on it, so they couldn't diagnose it.

Video attached and might be hard to see but camera shake is from vehicle shaking.

This happens wether the engine has been running for hours at a time or cold.


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Jerome10

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Stationary revving of the engine I think its natural that the torque would shake the vehicle when the engine is revved.

During acceleration is definitely stranger.

If no codes, and I assume that means no misfire(?) my only non-expert thought could be a bad engine mount?
 

12Lariat21

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Non-powerboost here, but it could defiantly be misfiring. I changed the spark plugs on my truck, and forgot to plug one of the coils back in. Drove my daughter to dance and back home with 1 cylinder unplugged, truck ran like crap, never threw a single code...it was only a short ~1.5-2 mile drive, so I'm not sure what it takes for the truck to sense a misfire, but damn...

Pretty sad if all the dealer did was look for codes...
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