Nobody ever answered this?
I have an 02 as well. How many miles?
Could be fuel injectors going. First my #3 was bad, then #1 and the car was very slow. I just decided to replace all my fuel injectors
when I took it for emissions inspections. I had knocking/rattling too. The knocking could be detonation from running lean from piston slap from running without fuel in the combustion chamber.
It took me 4 mechanics to figure that out. The first 3 told me that my #3 cylinder had low compression and I would need a new motor.
The fourth mechanic finally told me that my fuel injectors were going bad.
It now runs good, but the 1.8 burns oil from bad piston rings and I will have to replace the plugs every so often.
I originally had misfire codes, lean codes, cat codes, and vvt code (P1346).
Now all the codes are gone except the vvt codes.
