Approaching 150k miles, replace front O2 sensors?

[Kman]

MPG is down slightly. Truck is approaching 150k miles and the front O2 sensors have never been changed. Not throwing any SES codes. I see they are $20 on Amazon so it's not like it would cost a lot.

Anyone replace their front O2 sensors and notice any benefits or am I wasting my time?

 

[mmeachem]

Bump I'm at 128.***

Would like 2 know as well

 

[ATL]

im at 178k with stock fronts, i wouldnt worry about it until it throws a light. as long as there is no light, they are within their allowed range. but if you do decide to do them, they arent that hard at all. i paid ALOT more than $20 each, but i just put some in my dads esky. didnt notice any difference before or after, except for that cel

also from what ive seen personally, most of the o2 codes i have seen are the o2 heater circuit. the heater just helps the sensor get to operating tempeture faster, and doesnt effect performance really. now if you get a low voltage 02 code, youre prob going to be feeling the effects of it

 

[Kman]

No other input?

 

[Rivieraracing]

Me personally, I wouldn't change it until a code pops up for it!! Have changed out O2's before they were needed to be changed and it didn't make it run any better!

 

[ATL]

kman, if you just want to drop a few spare bucks in your truck, drop $30 on a scanner setup for a laptop. i got mine off amazon for $30 and it shows real time read outs for all the sensors. get that for $30 and see exact readings from all your sensors. then change the them if your not happy with readings

this is the one i got: http://www.amazon.com/gp/product/B002PYBZJO/ref=oh_o01_s00_i00_details

 

[taylorjm]

That setup looks pretty neat. I think I need one!

 

[01Konvict]

I changed mine at 185k and I am monitoring the mpg to see if anything has changed. Should know in a tank or two.

 

[Kman]

I changed mine at 185k and I am monitoring the mpg to see if anything has changed. Should know in a tank or two.

Let me know your findings, I'm curious.

 

[01Konvict]

Between the two tanks running 93 non-ethanol gas after changing sensors I monitored the first tank at 13.6 MPG and the most recent tank at 14.55 MPG. I don't know if this was the only fix to my old 10-11 mpg but it has def gone back to normal range. I still thinking of replacing the MAF due to random starts that instant cut-off. For the $60 and do it yourself change, I would say do it. It didn't hurt my pocket to spend the $