ok so i think my truck might be running a little lean and figured its prolly my o2 sensor. so is it the pre cat or post cat o2 sensor that determines the air fuel ratio?

 

pre cat

 

thats wat i was thinking. i found a bosch o2 sensor on rockauto.com for $48 bucks. that sound right to you guys?

 

I would go with the NTK. I got the Bosch one, but it was too long to fit with the tranny pan in the way. The NTK fit perfect. But it could just be my model year, or from the PO's tranny build?

 

tranny pan shouldnt be in the way, non stock exhaust?

 

I'm fairly sure mine is stock. I guess it could have been replaced and he didn't say anything. I know he replaced the muffler.

Either way, the NTK fit, so now I know lol. The bosch was very close to fitting, but just a hair too long.

Edit: by "he" I mean the PO

 

yap unfortunately that a good price. these damn things are high but hey you gotta have em are face 7mpg

 

Hu???