View Full Version : Emissions Inspection Problem - Need advice

04-29-2011, 11:22 PM
Hi All,

I'm looking for some thoughts on what might be causing my 1996 80LC to fail emissions inspection. Two years ago when I bought it the O2 reading was measured at 2.876. (anything less than 15.0 will pass). This year it blew a 26.67. I replaced the O2 Censor, but it still failed.

The only real modification I've done since I bought it was put bigger tires (285/70/17s) on my wheels (17" FJC wheels). Could the extra revving of the engine needed to get the tires spinning be causing the O2 to blow higher?

Thanks, John

04-30-2011, 12:36 AM

I'd start with reading through this thread...80s failing emissions seems to be more and more common every year :(