O2 sensor

My check engine light just came on and the code reads for the o2 sensor and its the front one, should I clear the code and wait or just save the time and replace it?

 

You can clear it if it annoys you, but it will more than likely come back on. But put it on your "to-do" list as your MPG's will be shitty until your replace it.

 

Thanks, I just ordered it in, the mpg I was getting was terrible

 

Replacing bank 1, sensor 1 (Air/fuel sensor) on my '03 made a noticeable difference in my overall mpgs. There were about 150K miles on the truck at the time, which seems to be about the life span of these units, the rear O2 sensor, and the coil packs. They all failed within a few thousand miles and within six months. All replaced with Denso parts. Good for another 150K.

 

That sounds right for "open loop" operation due to bad o2 sensor... Hwy mpg should be closer to 18. I'm assuming you're actually calculating it too, rather than guessing.

 

So your getting shitty MPG, and you get a code relating to a sensor that controls the air/fuel mix. So the answer is just to replace it when it gets annoying? Oh jeez.

 

Use Creeper oil (Aero Kroil Lubricant) works great, I like to swap them with a warm exhaust SI (gm service info.) tells the tech to remove when hot.