My son's 89 6 cyl.Cherokee just barely failed the Ca. smog test. It
passed the 15 MPH but failed at 25 MPH on the "NO(PPM)" part of the test
(max allowed is 875 PPM.his read 1066 PPM). Anyone have any ideas what
the problem might be?
The mechanic told him it is probably either the O2 sensor or the
catalytic converter.
TIA
--
"Trust me, I do this all the time"
Mike M