My 1992 acura legendr has failed the state emission test 3 times. The failure is due to a high NOx reading. The first time I failed, the technician recommended that I replaced the CAT, which I did, but still failed. Then, one of the mechanics here suggested an EGR cleaning. Again, the car failed. However, something happened during the 3rd test: the car passed the 25/25 test with a NOx reading of 420 ( required is 796) but failed the 50/15 test with a NOx reading of 1620. Now, I have no idea what should be done next. I'd appreciate your thoughts on this matter. Thanks in advance.
Monday, June 4th, 2007 AT 11:33 PM