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I'm having some problems with the codes:
P0421- Warm-up catalyst system (RH) efficiency below threshold ON 2 Catalyst
P0302-P0306- Misfire detected.
The P0421 I have no idea what would cause that, I've read; faulty cat, faulty O2's, but is there any way to check which one?
For the misfires, I get various cylinders "misfiring" (I don't really think it is), and it only happens when I really push the car. I know if you push it too hard when its cold it will throw the dummy code, but the car is completely warmed up. Perhaps something to do with the plugs? (I just changed them 10k ago).
I'm almost thinking about getting my car reflashed with the latest update (Its an '03 and I don't know when the last update was performed, at least before May '05), but am out of warranty so I'm not sure on how much it would cost to have it done. Does anyone know?
P0421- Warm-up catalyst system (RH) efficiency below threshold ON 2 Catalyst
P0302-P0306- Misfire detected.
The P0421 I have no idea what would cause that, I've read; faulty cat, faulty O2's, but is there any way to check which one?
For the misfires, I get various cylinders "misfiring" (I don't really think it is), and it only happens when I really push the car. I know if you push it too hard when its cold it will throw the dummy code, but the car is completely warmed up. Perhaps something to do with the plugs? (I just changed them 10k ago).
I'm almost thinking about getting my car reflashed with the latest update (Its an '03 and I don't know when the last update was performed, at least before May '05), but am out of warranty so I'm not sure on how much it would cost to have it done. Does anyone know?