What is your question?
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What is your question?
First time i took it to the shop it showed 2 codes and a misfire. codes were p0135 and p0449.Ive replaced o2 sensor 1, evap vent valve solenoid and elictical harness as well as new spark plugs and wires for the misfire. The shop then called and said i had 2 new codes show up that read p0420 and p0463. The mechanic told me my fuel pump needed to be changed and possibly a new catalytic converter as well. He then told me to drive it around for 100 miles first to see if the codes shut off. My car had a hard time starting up n always felt like it was gonna fie when i came to a stop,so i changed the fuel pump 2 weeks later. When i drove it to the shop where the fuel pump was changed the check engine had shut off on its own. After fuel pump was replaced car no longer dies or hesitates, it drives beautifully but the mechanic said he couldnt smog it yet until ive driven it around for atleast 100 miles. When i was almost at 100 miles the check engine light showed up again with p0420. Is it really my catalytic converter or could it be something else? I already spend alot of money in the last 2 months. Pls help.
2 Replies
Live data on 02 sensor '2' is what needs to be looked at! If the catalyst is depleted or defective, those readings will "prove" it.
Misfires damage catalytic convertors. When an engine is misfiring because of an ignition failure, raw fuel and air both make it into the exhaust and the catalyst trying to clean that up gets overheated, sinters, and can then fail in a relatively short period of time.