How Some Bad Gas Almost Cost me $300+ Last night, i'm running errands, my car's on E... i pull into Shell, put in five quick bucks and go on my way... Today i'm running more errands and my car's on E again... i've got to get my car inspected so i can register it here in Georgia, so i go to the emissions place - which is at a gas station - and i figure i'll fill up as soon as i'm done with the inspection... Inspection takes longer than usual and when it's finally done, i walk up to the guy... "So we're all set...?" Maybe talking to so many people makes him talk fast, maybe he has nothing to do but drink coffee all day while he's waiting for people to get their cars inspected... Either way, when he spoke, it all came out in one, continuous string of words - none of which bore any emotion different from the others... "Yeah, you failed, everything's printing out right now..." Now, the question, "So we're all set?", when answered with a "yeah", you would think means that i'd be all set - you know, that i'd PASSED and i can go on my merry way... Au contraire... "i failed...?!?" "Yeah, it's printing out right now, we'll find out what the problem is..." System failure. Running rich (Bank 1). The guy also pointed out that my Service Engine Soon light was on... What...?!? When did THAT come on...?!? i've had the car for two weeks...!!! WTF does "Running rich (Bank 1)" mean...? So i fill up my car and go down the street to the local auto parts store and ask the guy if he knows what this means... He tells me i probably just need a tune up... i get back in my car and the Service Engine Soon light is no longer on... Hmmm... i go a few blocks more to the Nissan dealership, park the car and turn it off... i go inside and explain to the guy in Service what my problem is... He says i probably need a new oxygen sensor... "How much is that and can you have it done by today...?" "We don't have that part in-house and total, with labor and everything, you're looking at about $325-$340..." At this point, i breathed a heavy sigh mixed in with some choice expletives... "i'll go see an independent, thanks" and i walk out... i get back in my car, turn it on and the Service Engine Soon light isn't coming on... It was on ten minutes ago, why isn't it on now...? i get back on the road and i'm driving in the general direction of where i think i might find some kind of cost-effective independent mechanics - which happens to be in the same direction as the emissions place. i look down at the dash. Still no Service Engine Soon light. At the last minute, i whip my car back into the emissions parking lot and queue up between the cones... Someone's ahead of me, so i have to wait... i put the car in park and sit with what little patience i'm able to muster... i eyeball my dash... Then i notice something... My tachometer, while in park, is idling at around 0800 RPMs... When i was hear the first time, sitting in park, it was idling at about 1,200 RPMs... Running rich...! Sonofa- "You gonna run your car through again...?" "Yeah..." "What'd you get done to it so fast...?" "Nothing..." "Well, it's gonna fail again..." "Nah, i think it's gonna pass this time..." "Oooookay... i'll be ready in just a few minutes..." As he walked away, i had a five-minute conversation with my car... "Listen... i know we just met... and i know we're still getting to know each other... but i really need your help with this... i think you just got some bad gas... Your Service Engine Soon light isn't on anymore and you're not running as rich as you were... i didn't give you bad gas on purpose... Had i know that station had some suspect fuel, i would've gone to another place... Please help me on this one... i really need your help..." End result...? i passed.