o2 Sensor Upstream

[bugeye1257]

Hey everyone,

What is the cheapest upstream (before cat) sensor you guys have found?

Its for my 05 4.0!

Need to replace it for my inspection asap, I believe the cheapest I found was on rock auto for $103.00. I do not care what MFG made it.

Thanks!

 

[netwon]

Hey everyone,

What is the cheapest upstream (before cat) sensor you guys have found?

Its for my 05 4.0!

Need to replace it for my inspection asap, I believe the cheapest I found was on rock auto for $103.00. I do not care what MFG made it.

Thanks!

Make sure you check out the readings coming from your MAF sensor. The code for upstream O2 sensors can lead to spending lots of money unnecessarily. If you download the service manual you will see a trouble shooting guide for the different engine codes. The apparent code is sometimes a symptom of another problem. Service manual is good at this.