I have a 95 pontiac grand am. The mechanic has replaced the egr valve. And also put new catalytic converter on. I don't have the smog results with me (at the mechanic's right now) - but it passed everything but the top # on the NOX. And then when tested again - it passed everything except the bottom # on the NOX. Any other ideas?
have the same problem?
Tuesday, January 4th, 2011 AT 11:37 PM