The cam phasers in those motors start to tick really loud when they go bad, common issue.
The valve train is also noisy in them aswell, a phaser issue just makes it worse. Tractor, diesel or just a clapped out motor is what I like to call them. Some will run a thicker oil like a 5W40 to stop the noise LOL.
Those codes if present could make full throttle an issue.
They also are known for misfires on older plugs. BUT thats where the 3V curse comes into play. The sparks plugs are pretty unique and extra long, then tend to get carbon build up on them and get stuck in the cylinder head when you remove them. Most get lucky and they come right, others have to remove the heads and get a machine shop to remove them. You could try fuel cleaners and seafoam several times to try and break up the carbon build up before you tried to remove the plugs.
