Was that a po420 code?

Could still be the converter, just because it isn't super heating doesn't mean it's working.

Answered by Service Writer (expert)
9,955 answers provided

really is there a way to test the cat to know for sure >???? could it be an o2 sensor >??? i dont remember the exact code though if it was a p420 code what does it mean ?? are there diffrent numbers for low effiency catalyst that would mean something else???? thanks for your reply

Response from TheStrength
1 question asked

You need to find out what codes are in there. Before you can troubleshoot po420, (which it sounds like your describing), there are about 20 codes that CAN NOT be present, before troubleshooting this code.

IF that is the only code, than you need to check for an exhaust leak at the O2 sensors or any up to the engine. Excess oxygen throws out the true readings of the gases by the O2 sensors.

Since you say that "sometimes" you have the power you expect it to have may mean the converterter is broken intrnally and intermitantly plugging up.

So find out the codes.

Answered by Service Writer (expert)
9,955 answers provided

ok i will and ill get back to you i really appriciate your response's it help a whole lot thanks and i will get back to you on the codes

Response from TheStrength
1 question asked