gmrulz4u Posted June 17, 2004 Report Share Posted June 17, 2004 Well...I go for my emissions test tomorrow and am having a major internal debate as to whether I should replace my O2 Sensor before I go or not... For the past few weeks I've been getting both codes 44 and 45. Mostly 45. And like I've said before, I have a A/F Gauge installed and today it did the thing again where the O2 will stick in the "RICH" and just not move...I was idling for about 7-8 minutes and it didn't move at all... I had the O2 Sensor replaced in September of 2002. It's funny because when I had the emissions test done in July of 2002, I passed, and the guy said I should replace my O2 because of a slightly higher than "normal" readings...so I went ahead and replaced it to see if my mileage would increase...and now, 2 years later...about to go for another emissions test, and this time the damn O2 sensor is acting-up again!! Today I did a few maitenance things like taking off the throttle body and giving it a good cleaning...as well as the IAC...and I cleaned and re-oiled my K&N Air Filter(which was quite dirty)...and I erased the ECM's memory and did an idle re-learn... After all of that...NOTHING has changed!! One thing I wanted to do was check the injector resistance...but I couldn't find the supposed harness that is at the back of the plenum...everyone on the v6z24.com message board told me that there's a harness at the back of the engine that allows you to measure the combined resistance of each set of 3 injectors(1,3,5 & 2,4,6)...but I couldn't manage to find this harness that they are talking about!?? Anyways...I think I'll replace my O2 Sensor just incase and see what happens... Is it easy to replace by myself?? Or should I take it to my mechanic? And oh yeah, anyone ever have both codes 44 and 45 at the same time? THANKS! Quote Link to comment Share on other sites More sharing options...
Baddflash Posted June 18, 2004 Report Share Posted June 18, 2004 The o2 sensor is way easy to replace yourself , just rotate the engine forward, unplug it and pull it out. Actually I've never had a code on the Lum since I bought it ( knocks on wood) Quote Link to comment Share on other sites More sharing options...
gmrulz4u Posted June 18, 2004 Author Report Share Posted June 18, 2004 Yeah I was just reading that on various forums...a lot of guys seemed to not even pull the engine forward!!? I'll see how far my hands can get in there and determine whether I should or not... Quote Link to comment Share on other sites More sharing options...
Jcrow Posted July 1, 2004 Report Share Posted July 1, 2004 The connector to check the injector resistance is next to the computer under the plastic cover on the passanger side of the engine compartment. I think its the outer four corners of the plug that go to the injectors Quote Link to comment Share on other sites More sharing options...
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