car shuddering

[hedonist222]

The other day my raptor started shuddering and vibrating at idle
Stops when I drive
But it felt like rain mode
Very limited performance
CEL flashing on and off
Ford said they would reset the VVT and then reprogram it

My cam phaser VVT was replaced about 12,000 miles ago
Car currently has about 80,000 miles

Any idea whats going on?

Thank you

 

[FordTechOne]

Flashing CEL indicates a misfire. I’d recommend starting with spark plug replacement; they’re due at 100k miles anyway.

 

[hedonist222]

Instead of flashing, maybe it was turning off and then on? Meaning something triggered it, then relapsed.

You know - as I was driving it.
It did feel like it was a spark plug issue - because it was struggling to maintain an idle. And when driving, it felt underpowered.

 

[FordTechOne]

Do you know what DTCs set? If they’re saying it’s a VCT issue it could be a faulty VCT solenoid, which is separate from the phaser and is much easier and cheaper to service.

 

[skidmarcx]

Like mentioned knowing which DTCs are set and active will help determine the cause

 

[James O]

My truck was running rough at a stop light and lunged forward. Not sure wat caused it.

 

[hedonist222]

car returned yesterday

same issue happened the second time I drove it today
it was fine in the morning - relapsed in the afternoon

my spark plugs have never been replaced - Ford said they're replaced at 100,000 miles

here is what the OBD reader is pulling

 

[FML]

This sounds like what I experienced on my SHO. It was in fact a VCT solenoid.

 

[FordTechOne]

Looks like an issue with the Exhaust VCT solenoid on Bank 2. If they’ve already tried manually cycling the solenoid with IDS then the solenoid should be replaced.