I have a 95 Honda VX. It's throwing a 48 code. Lean air fuel mix ratio. I was told this is most likely an 02 sensor. I tried the cheap stuff first. I replaced the fuel filter and cleaned the intake. So on and so forth. I also have ran two tanks of Lucas treated gas throuth it. Tires to 40psi. Bone stock unit. 200k miles. So, it's gotta be the oxygen sensor. I have been getting about 37-38mpg... mostly highway. I went to advance and picked up a sensor for 68 bucks.. not the right sensor, it's a 4 pin... I have a 7. The one with 7 is ... are you sitting down? $317. Wow... they also have a universal that you have to wire in... My question is this... will the universal work? (only $70) or do I need to plunk down 317. Also, does anyone know about any sites that offer an oem unit for less money? Thanks alot guys.
I also pulled the old sensor out and cleaned it... I don't think that helped.. the check engine light used to come on and off, now it stays on. Thanks again.