I just had my 91 Toyota Camry Le inspected for emissions. It passed everything but NOx. I had the following readings
High Speed Test Low Speed Test
Standard Current Standard Current
HC 123 26 128 127 CO (%) .69 .13 .71 .31 C02(%) 14.6 14.4 O2 (%) 19.7 20.4 NOx 878 1093 970 947
The part that I am especially puzzled about is the very high O2 readings. In my test of last year, I had readings in the .5% range. How in the world can I get a reading of 20% or more? In fact, isn't the atmospheric % of O2 in the range of 20%? Is it possible that I had a reading which reflects only that of atmospheric O2?
I would appreciate opinions on what is going on.
Thanks, Al