New 02 sensors improve mpg?
10-02-2012, 09:22 PM
#2
Originally Posted by blue thunder06
An instructor at school told me replacing the 02 sensors will improve gas mileage, is that possible?
10-02-2012, 10:23 PM
#3
Yes, there is a potential to get better MPG's or a smoother running motor by replacing or cleaning your 02 sensors...
It is hit or miss as far as results go.
I personally noticed a much smoother idle in my 5.0 bronco after replacing my 02s. But I also deleted my rear cats and hung some new to me (junkyard) exhaust. The O2s never threw a code and looked reasonably clean (gray colored buildup) when I pulled them.. I did notice some better MPG's out of the bronco, but its hard to really say because I deleted the cats and hung a dual exhaust at the same time.
It is hit or miss as far as results go.
I personally noticed a much smoother idle in my 5.0 bronco after replacing my 02s. But I also deleted my rear cats and hung some new to me (junkyard) exhaust. The O2s never threw a code and looked reasonably clean (gray colored buildup) when I pulled them.. I did notice some better MPG's out of the bronco, but its hard to really say because I deleted the cats and hung a dual exhaust at the same time.
10-02-2012, 11:04 PM
#4
Senior Member
Thread Starter
Originally Posted by Especial86
Yes, there is a potential to get better MPG's or a smoother running motor by replacing or cleaning your 02 sensors...
It is hit or miss as far as results go.
I personally noticed a much smoother idle in my 5.0 bronco after replacing my 02s. But I also deleted my rear cats and hung some new to me (junkyard) exhaust. The O2s never threw a code and looked reasonably clean (gray colored buildup) when I pulled them.. I did notice some better MPG's out of the bronco, but its hard to really say because I deleted the cats and hung a dual exhaust at the same time.
It is hit or miss as far as results go.
I personally noticed a much smoother idle in my 5.0 bronco after replacing my 02s. But I also deleted my rear cats and hung some new to me (junkyard) exhaust. The O2s never threw a code and looked reasonably clean (gray colored buildup) when I pulled them.. I did notice some better MPG's out of the bronco, but its hard to really say because I deleted the cats and hung a dual exhaust at the same time.
10-02-2012, 11:18 PM
#5
QED electrical cleaner and or MAF cleaner spray should do the trick...
I believe you can heat them up with a torch and then quench them in water as a method too.
The problem with pulling old 02 sensors is they sometimes seize right in the bung... If they do crank out sometimes the threads shear off the 02 or bung.. It would be a good idea to soak them with PB blaster or your favorite penetration lubricant for a full day before the job... If it were me, I would buy new ones to have on hand. It is very common to damage the 02 while it's being removed. You don't want to be caught with your pants down when swapping 02s. Your truck will run terrible without them.
I believe you can heat them up with a torch and then quench them in water as a method too.
The problem with pulling old 02 sensors is they sometimes seize right in the bung... If they do crank out sometimes the threads shear off the 02 or bung.. It would be a good idea to soak them with PB blaster or your favorite penetration lubricant for a full day before the job... If it were me, I would buy new ones to have on hand. It is very common to damage the 02 while it's being removed. You don't want to be caught with your pants down when swapping 02s. Your truck will run terrible without them.
10-03-2012, 01:15 AM
#7
Originally Posted by durbs
How hard is it to change them? According to the guy at the shop my check engine lights on cause I need new ones but he's trying to charge $800 for new ones
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10-03-2012, 02:23 AM
#8
QED electrical cleaner and or MAF cleaner spray should do the trick...
I believe you can heat them up with a torch and then quench them in water as a method too.
The problem with pulling old 02 sensors is they sometimes seize right in the bung... If they do crank out sometimes the threads shear off the 02 or bung.. It would be a good idea to soak them with PB blaster or your favorite penetration lubricant for a full day before the job...
I believe you can heat them up with a torch and then quench them in water as a method too.
The problem with pulling old 02 sensors is they sometimes seize right in the bung... If they do crank out sometimes the threads shear off the 02 or bung.. It would be a good idea to soak them with PB blaster or your favorite penetration lubricant for a full day before the job...
10-03-2012, 04:11 AM
#10
If your o2 sensor is on the outs I could see it making a difference. O2 sensor malfunction would likely result in a rich AFR (air to fuel ratio) giving you a exhaust smell, poor idle, and a considerable MPG loss. But I there is nothing wrong with them....not likely.