2018 F150 5L engine rattle on decel.

lmorris · November 4, 2020

I've done the reprograms. Have a couple still making the noise, exhaust phaser rattle on decel from 1000 RPM after engine is loaded. Unplugging the exhaust VCT solenoid will eliminate the noise. Hotline responses at this point have me testing oil pressure and flow to the suspect phaser, both of which I can't find any issues. I have been able to create the noise on every 2018 F150 5L in bring into the shop, although most people are either not hearing it or are not complaining about it. Anyone else dealing with this?

forddieseldoctor · November 4, 2020

I got one that still makes some noise with them unplugged. It changed when I unplugged it but didn’t go completely away. We ordered exhaust phasers and solenoids for it.

lmorris · November 13, 2020

What I have found is the one's that have the noise stop with the solenoid unplugged can not be fixed. The other's will have the noise greatly reduced, but it's still there.