my 99 silverado started runing rough then the service light came on i went auto zone to read code it said misfire and o2 sensor i changed my plugs still have the rough runing can the o2 sensor cause it to run rough?or should i be looking somewhere else thanks for any help
I would say yes it could be the O2 sensor...... they controll the ammount of fuel the engine gets , if they are bad and reading that the ammount of fuel in the exhaust is too rich it could be leaning out your engine even though it is running fine
