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Originally Posted by familytruckster  It's obviously obd2 because of the post cat O2 sensor. You cannot just clear the codes, the ECM has to run a few cycles to get the "pass" The ECM tests the cats at intervals and compares the front and back sensors to see if the cat is functioning. If the tests haven't run, the car fails the emissions test.
If it's rattling ,the honeycomb has probably started to come apart.
You might be able to get a better cat to put on that pipe, like a magnaflow universal.
I'd be on the lookout for a used good one from a fellow forum member. |
Just sent him one out today. So his cel will be over and done.