I reasantly changed the crankshaft posion sensor. the car has backfired a few times before the sensor change.could that have hurt the 02 sensors? I also replaced the mass air flow sensor for the second time in 4 years. What could cause this to happen? I replaced with remanufactored is that the problum.
can the downstream 02 sensor make the idel rough,and hesatate on take off, on 2001 Chevrolet Monte Carlo
It could but I'd rely on your computer to recognize problem. If this sensor bad should put up check engine trouble light on dash. If so take to Autozone and if diagnosis points to that sensor- replace it. If not light on suspect fuel pressure.