High HC and CO and low O2 in emission test
Recently my car 155 8V 2,0 1995 has taken about 10% more gas than usual and now failed an emission test.
CO 3,9 0,75 %
HC 300 150 ppm
O2 0,14 0,14 %
Rpm at idle is smooth and about 1000 while hot and when cold about 1300 quite smooth.
220 kkm driven, original cat and lambda.
I think either there is someting fishy about the lambda or the motoronic thinks its getting more air than it is actually getting
Something about the air sensor?
The increase in gas usage and the low O2 level indicates that its not
Any ideas ?