Hi all,
My car is a Protege 2002, ES, 2.0L engine.
Initially, I got P0300, then I got a bliking CEL but had to drive, then changed the spark plugs and the CEL went away. But after a few miles at ca 50mph, I got a new CEL. I got it checked today and got the dreaded P0421. It might be that the catalytic converter (WU-TWC) got ruined.
I know it could be the oxygen sensor after the cat or before, and I will check them before attempting to change the cat. Or that there is a trick to fool the rear sensor, I just read that.
So, I have a few questions:
1. if I just ignore the problem, meaning do nothing, is the car safe to drive, would I have any issues? So, we, the humans had any problems. Second, would it cause more problems to the car meaning more/higher repairs in the future.
2. can replacing this cat be done by a home mechanic (me) in the parking lot? I am not that experienced but have done a few things.
Thanks. Neko
My car is a Protege 2002, ES, 2.0L engine.
Initially, I got P0300, then I got a bliking CEL but had to drive, then changed the spark plugs and the CEL went away. But after a few miles at ca 50mph, I got a new CEL. I got it checked today and got the dreaded P0421. It might be that the catalytic converter (WU-TWC) got ruined.
I know it could be the oxygen sensor after the cat or before, and I will check them before attempting to change the cat. Or that there is a trick to fool the rear sensor, I just read that.
So, I have a few questions:
1. if I just ignore the problem, meaning do nothing, is the car safe to drive, would I have any issues? So, we, the humans had any problems. Second, would it cause more problems to the car meaning more/higher repairs in the future.
2. can replacing this cat be done by a home mechanic (me) in the parking lot? I am not that experienced but have done a few things.
Thanks. Neko