O2 sensors
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Fleet Mechanic
Joined: Nov 2005
Posts: 1,899
Likes: 12
From: Upstate NY
O2 sensors
I did a reasonably good site search and couldn't find the answers.
I'm about to embark on one of my favorite jobs
on my '01 5.4 SCab 4x4, changing the spark plugs which will be the stock Motorcrafts.
As long as I am going to schedule the best part of a day to do this plug change out, I need an opinion on whether to change O2 sensors as well, and if so, which ones. Generally I see postings that only the fronts normally cause a problem. Is this the consensus - or do I just say the heck with it and let them go until I have a problem. I will be changing the fuel filter and "dusting" off the MAF as well - need to get as much gas mileage as possible and if a few bucks with these additional components has a reasonably short payback time, will include.
As far as the O2 sensors, which seem to perform the best. The local parts folks sell Standard/Blue Streak, Bosch or Denso - Motorcraft is a tough find.
Are there any other parts that I should consider - there are no fault codes (at least today) showing
Thanks
Dave
I'm about to embark on one of my favorite jobs
on my '01 5.4 SCab 4x4, changing the spark plugs which will be the stock Motorcrafts.As long as I am going to schedule the best part of a day to do this plug change out, I need an opinion on whether to change O2 sensors as well, and if so, which ones. Generally I see postings that only the fronts normally cause a problem. Is this the consensus - or do I just say the heck with it and let them go until I have a problem. I will be changing the fuel filter and "dusting" off the MAF as well - need to get as much gas mileage as possible and if a few bucks with these additional components has a reasonably short payback time, will include.
As far as the O2 sensors, which seem to perform the best. The local parts folks sell Standard/Blue Streak, Bosch or Denso - Motorcraft is a tough find.
Are there any other parts that I should consider - there are no fault codes (at least today) showing
Thanks
Dave
Postmaster
Joined: Jul 2001
Posts: 4,038
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From: South Kitsap County, WA
See my post about this in this thead https://www.ford-trucks.com/forums/5...fo-on-mpg.html
my comments about O2 sensors are at the end.
-Kerry
my comments about O2 sensors are at the end.
-Kerry
Thread Starter
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Fleet Mechanic
Joined: Nov 2005
Posts: 1,899
Likes: 12
From: Upstate NY
Originally Posted by kspilkinton
See my post about this in this thead https://www.ford-trucks.com/forums/5...fo-on-mpg.html
my comments about O2 sensors are at the end.
-Kerry
my comments about O2 sensors are at the end.
-Kerry
It sounds like with the gas mileage I am getting is about what you have reported in the thread
. Based on that, I ain't gonna touch a thing with the exception of the plugs which I already have plus a new fuel filter and I don't have much in the way of mods.My 28 foot travel trailer can pull it down to 10 - 11, depending on how fast I push it or whether there is a head wind, etc. An car trailer is ~13. And I mirror about everything else.
Thx,
Dave
New User
Joined: May 2006
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I changed the O2 sensors on my truck and let me tell ya, the gas gauge DEFINATELY doesnt move as much as it used to. It seems to run better too.
I got mine here: http://www.autopartswarehouse.com
I also replaced a couple other sensors for cheap from there as well. The Oxygen sensor was a denso OEM style and it works fine. I only replaced the one before the catalyst however, as that is what contributes to your gas mileage anyway. The back one just checks to see if it is on and working.
I got mine here: http://www.autopartswarehouse.com
I also replaced a couple other sensors for cheap from there as well. The Oxygen sensor was a denso OEM style and it works fine. I only replaced the one before the catalyst however, as that is what contributes to your gas mileage anyway. The back one just checks to see if it is on and working.
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Former Vendor
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From: Seattle
Thread Starter
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Fleet Mechanic
Joined: Nov 2005
Posts: 1,899
Likes: 12
From: Upstate NY
Thanks
[QUOTE=discountfordpart]And if you guys want Factory OEM check my site.
Ed
www.discountfordpartsaty2kford.com[/QUOTE]
Ed,
Thanks for the web site. OEM is nice for many items but very pricey in comparison to Denso and Standard for these sensors. I do plan on bookmarking the site as there are a lot of OEM parts I do prefer over aftermarket.
Dave
Ed
www.discountfordpartsaty2kford.com[/QUOTE]
Ed,
Thanks for the web site. OEM is nice for many items but very pricey in comparison to Denso and Standard for these sensors. I do plan on bookmarking the site as there are a lot of OEM parts I do prefer over aftermarket.
Dave
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Former Vendor
Joined: Jan 2006
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From: Seattle
Dave, do a comparison on the next part your looking for and let me know where I'm at price wise.
Ed
Ed
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Junior User
Joined: Jun 2006
Posts: 71
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From: SW MN
My 2000 F150 with a 4.6L has about 120,000 miles and I have never replaced the O2 sensors. Would it be a good idea to replace them to get better millege or should I wait until the service engine light goes on for replacing them?
Thanks
Thanks
Thread Starter
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Fleet Mechanic
Joined: Nov 2005
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From: Upstate NY
OK by me
Originally Posted by discountfordpart
Dave, do a comparison on the next part your looking for and let me know where I'm at price wise.
Ed
Ed
I will do that - luckily, I don't seem to have many problems with my truck....yet.
Your site is well bookmarked
Now, my 5.0L crate motor in my '31 A may be a different story !!!
Dave
Postmaster
Joined: Jul 2001
Posts: 4,038
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From: South Kitsap County, WA
Originally Posted by oscar_007
My 2000 F150 with a 4.6L has about 120,000 miles and I have never replaced the O2 sensors. Would it be a good idea to replace them to get better millege or should I wait until the service engine light goes on for replacing them?
Thanks
Thanks
-Kerry
Freshman User
Joined: Dec 2004
Posts: 37
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From: Staunton, VA
Originally Posted by 86fiveo
I changed the O2 sensors on my truck and let me tell ya, the gas gauge DEFINATELY doesnt move as much as it used to. It seems to run better too.
I got mine here: http://www.autopartswarehouse.com
I also replaced a couple other sensors for cheap from there as well. The Oxygen sensor was a denso OEM style and it works fine. I only replaced the one before the catalyst however, as that is what contributes to your gas mileage anyway. The back one just checks to see if it is on and working.
I got mine here: http://www.autopartswarehouse.com
I also replaced a couple other sensors for cheap from there as well. The Oxygen sensor was a denso OEM style and it works fine. I only replaced the one before the catalyst however, as that is what contributes to your gas mileage anyway. The back one just checks to see if it is on and working.
New User
Joined: Jul 2005
Posts: 21
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What are the symptoms of a bad O2 Sensor? I had my code re-read and left bank O2 Sensor came up. I have a slight miss, or sputter in the engine at various speeds. I don't lose speed when accelerating and have been told by several mechanics that it is not the fuel pump. I would just like to know the symptoms of bad sensors.
Postmaster
Joined: Jul 2001
Posts: 4,038
Likes: 3
From: South Kitsap County, WA
02 sensors have resistance readings they should be in the range of. By using an ohmmeter or multimeter, you can compare the readings of the two sensors at the connectors. I'd also bust the suspected bad one loose from the bung and look at it... clean it off with alcohol and see if that doesn't change the code, if you get a resistance that is pretty close to the good side. Sometimes a carbon deposit will end up on the sensors from an abnormally rich run and gunk it up a bit. A black soot is normal. A cleaning of both sides may help, as well.
-Kerry
-Kerry