Long story is that I got bad upstream O2sensor codes when I changed the valve cover gaskets and cleaning of the throttle body....so I changed them out with cheap O2 from ebay (2 for $22 total). I still am getting bad codes-the codes are 133,134,153, and154. I realize that I should have put in "better" sensors.
The question is how much of a problem are slow or out of spec readings. At a start up idle i have values of .350v b1s1 and .045v b2s1. At about 1500rpm .840v and .205v respectively. The range of values were .150-.905v b1s1 and .45-.940v b2s1
I did this work for a college student living with us to help her-2005 suzuki xl-7 with 167k last longer.
The O2 sensors are a pain but I will do it again if it makes a big difference. Any comment on brand? Rockauto has upstream sensors;
Ultra-Power $25
walker $47
Denso $58
NTK $59
Botch $62
Thanks so much
John
Scotty says to always use OEM oxygen sensors. Hers is probably Bosch or Denso, try calling NAPA if you aren't sure which is OEM.
It might run poorly and get bad gas mileage. Besides the codes, are there other concerning symptoms? Do you have emissions checks where you are?
Just put the good sensors in.
Bad, out of spec sensors can cause poor MPG and other issues, not to mention failed emissions inspections.
Whichever brand is OEM for the Suzuki is what you'd want back in there. You also mentioned that you cleaned the throttle body, but did you clean the MAF?
