i just cleaned my disa /// icv /// throttle body and map sensor when i started the car it idle like a champ but then after a few drives up and down my engine light came up and it gave me o2 sensor codes indicating all 4 going wrong and of course rough idle again can anybody help me?.... my options are change my fuel filter ? egr valve ? change my 4 month old ngk ingridium spark plugs again ?? or empty all my cheap gas and fill up with premium and an additive fuel cleaner thanks guys