I FAILED EMISSIONS SO I HAD EMISION AMP TIMMING ...
1996 Nissan Micra
I failed emissions, so I had emision & timming censors replaced as recommended, how long is the drive cycle. Ive had it on surface streets and freeway. But today at the testing computer read to soon.
Friday, February 1st, 2013 AT 10:55 PM
Usually an hour's drive should be sufficient.
Try this, drive on hghway for 20 minutes, go to city driving for 10 minutes and back to highway for another 20 minutes.
During this period, avoid sudden accelerations and try to be gradual in as many ways as possible.