O2 sensors?

[WICKED KJ]

I'm getting to come home from over seas and was wondering since I have about 140,*** on the dial of my KJ, should I replace the O2's on her? and if so, then what brand do some of yall recommend that I go with? I've had it since 38,*** miles and have never done so, maybe a reason why I was getting about 11 mpg.

 

[04Liberty]

I'm surprised you haven't gotten any codes. You can either go to one of the big parts chains or never go wrong with OEM.

 

[WICKED KJ]

you know it might have been throwing a code for that but never checked it. engine just came on when it was cold ad wet for some reason. i;m just gonna buy all 4 of them and call it a day and replace them for shi&% and giggles

 

[WICKED KJ]

I'm seeing 3 aqnd 4 wire O2's, which ones do I need?

 

[rockymountain]

let us know what MPG you get after the replacements are in. I'm assuming you ruled out plugs and have new ones.

 

[WICKED KJ]

yea i replaced the plugs back when i was home before i left for this deployment. had them in about 2 months prior. im thinkning the its the O2's

 

[tjkj2002]

If the O2 sensors were bad your MIL would be on.Slow or lazy O2's will also turn the MIL on.


Without looking at what the O2's are actually doing via a scanner,and the lack of the MIL on I highly doubt it's the O2's.

 

[WICKED KJ]

so what exactly is MIL? ill probably get it when you tell me.

 

[tjkj2002]

so what exactly is MIL? ill probably get it when you tell me.

Malfunction Indicator Light,or more commonly known as the "check engine light".

 

[WICKED KJ]

oh right thank you TJ