i have a 90 accord ex its my hooptie but anyways. Quick question, why do my car lags sometime when i step on the gas, i think its cuz my O2 sensor is lose so the exhaust gas is stalling my car. Not sure, it does this all the time now but if i step on it hard the RPM just jumps and the car goes. This ever happened to any of ya?

 

My car did that, found out I had oil leaking up onto my spark plugs. Check that.