I REPLACED THE O2 SENSOR IN MY CHEVY TRUCK THE ...
1990 Chevrolet Truck
April, 2, 2013 AT 2:46 AM
I replaced the o2 sensor in my chevy truck; the check engine light went off for a week, now it's back on and is sucking up the gas.
here is the real problem: when the check engine light is on it runs great !
when the light goes out it becomes sluggish but will still run.
i purchased and had the auto repair guy use the code reader from my truck so this is how I know it's the o2 sensor.