My car failed the CA smog test. Although everything is within specs,
the CHECK ENGINElight came on during testing.
The shop replaced the IMRC valve ($180), and told me to come back in
300 miles so the system could reset itself. I've been back 3 times,
and am now over 1,000 city and hwy miles with no reset. (They are not
charging for retests)
Is this unusual???