I am having a mental dilemna regarding oxygen sensors and preventative maintencance vs. wasteful spending. I have an '04 Tahoe with 166K miles. I just replaced the plugs for the 2nd time and changed the oil. I keep it well maintained as I drive it for work and put a lot of miles on it.
My question is this. At 166K miles I have never changed the Oxygen sensors. The suggested maintenance says to check/replace the O2 sensors at 100K, but here I am closer to 200K and I have never done anything with them at all.
Should I...
- Drive it until I get an error code?
- Change the pre-cat sensors now (~$100)
- Change all 4 O2 sensors (~$200)
I have heard stories where a failing O2 sensor will cause the computer to make adjustments that will make the car undriveable. I don't want to get caught 6 hours from home...in the rain...and have the O2 fail and ruin my trip.
Thoughts or suggestions?
My question is this. At 166K miles I have never changed the Oxygen sensors. The suggested maintenance says to check/replace the O2 sensors at 100K, but here I am closer to 200K and I have never done anything with them at all.
Should I...
- Drive it until I get an error code?
- Change the pre-cat sensors now (~$100)
- Change all 4 O2 sensors (~$200)
I have heard stories where a failing O2 sensor will cause the computer to make adjustments that will make the car undriveable. I don't want to get caught 6 hours from home...in the rain...and have the O2 fail and ruin my trip.
Thoughts or suggestions?