O2 Sensor.

So when I bought the truck form my uncle, he said the check engine light was from a bad o2 sensor. I don't know which one it is, does one go out more often then another?

 

Is your check engine light on?

Take it to an AutoZone or such a place. They will scan your truck and get a code telling you which O2 sensor needs replacing.

 

yeah it is. Thanks!

 

While we have no way to know what codes its actually popping, the front O2 sensor is the one that usually dies first.

 

I have replaced several upstream O2 sensors and not one downstream "yet". Have someone check what code is listed, it will tell you which one is bad.

 

Also bit me up if you need the upstream one. I got one I'll sell you for 20.00 and 5.00 shipping.

 

That's a very good deal for a new upstream O2 sensor if you need one. A few months ago I paid about $160 for a denso sensor for my own truck.