check engine
#1
#3
#5
RE: check engine
The one downstream of the cat doesn't have much to do with the A/F ratio - it's job is to verify that there's a change in a/f due to the cat. In other words it just makes sure the cat is doing it's job.
If it's running rich I'd look into your usual tune-up items but also if you've got a buddy see if he'll swap MAF's with you. Perhaps you've got an injector stuck open?
If it's running rich I'd look into your usual tune-up items but also if you've got a buddy see if he'll swap MAF's with you. Perhaps you've got an injector stuck open?
#6
RE: check engine
Thanks guys. finally gave up, & took it to the dealer. The upstream o2 sensor, was wired in wrong. Apparently, my friend that put it in, just wired the connector without checking, & connected the sensor wire to the heater, & the heater wire to the sensor. They switched the two wires, & NO MORE LIGHT!! Thanks again.