Replacing O2 sensor on Ford V10-anyone done it?

Love resolutions to problems like this.....
Goes to show ya.... Even a mechanic can kill the patient...

Jim

jbbrick wrote:
I got the app and adapter last week and have been playing around with them. Works great on 4 different cars plus the MH, and the whole thing is less than $18. My MH does not show a fault code but shows an "incomplete" on two sensors. That is what the mechanic told me, and he said to drive it around for a week and it may clear itself. Naturally, I'm not going to drive it around town for a week but may plan a camping outing soon where I can go 1-200 miles and now I can check the sensors myself to see if it clears, then take it back for the smog test. Apparently this problem happens if a vehicle isn't used too much. Calif rules allow one sensor to show incomplete, but not two.

I'll deal with it soon, and don't start sending posts telling me to move to Montana!

How about Mexico?

Problem resolved!. The clue was that "both" O2 sensor should come off of c133 not L bank from c110. Upon investigation I discovered a connector hanging from the back left side of the engine against the bell housing (conn c128). I also discovered two loose bolts on the bell housing. It appears that the auto trany was rebuilt. Upon reinstallation the tech did not connect the O2 #21 back to the appropriate connector, but instead connected it to the aux fuel tank connector under the chassis! (closest conn available to O2 #21)
The 2' jumper that extends the c128 conn to the O2 #21 conn is missing and I will have to get one from a salvage yard. But It makes complete sense now. One for the books.
Take care
Ed

jbbrick, I recently purchased a used Mini Winnie on a 2002 E450 chassis. Fuel gauge stuck on full. In working the fault down I discovered the O2 sensor just past the exhaust Y is connected to the factory harness in an unusual configuration. It is connected to the fuel gauge YE/WH sender and ground leads via the factory harness connector. It is easy to get to approx. 4' behind drivers side door under chassis mounted on the main exhaust tube before the muffler. I am still working the issue out with Ford techs, as they are stumped as well. I get the same reading that the O2 sensor is not reading and I have no error codes or check engine light. Ford tech said that the wire color code and pinout I gave them does not match the factory diagram. This is the orginal factory harness, never modified. They state that the O2 would not work, wired the way I informed that it was. I am still working the fuel gauge issue, but it appears to be intertwined with the O2 sensor not being properly wired from the factory? When I disconnect the O2 sensor I still do not get an error code or check engine light! I believe that my problem with the fuel gauge started when the previous owner replaced the O2 sensor with an aftermarket unit due to it not reading. If the wrong O2 sensor/wire pinout was installed it may be creating the problem with my fuel gauge. I will keep you posted on my progress today and if it sheds any light on your O2 sensor issue.

I got the app and adapter last week and have been playing around with them. Works great on 4 different cars plus the MH, and the whole thing is less than $18. My MH does not show a fault code but shows an "incomplete" on two sensors. That is what the mechanic told me, and he said to drive it around for a week and it may clear itself. Naturally, I'm not going to drive it around town for a week but may plan a camping outing soon where I can go 1-200 miles and now I can check the sensors myself to see if it clears, then take it back for the smog test. Apparently this problem happens if a vehicle isn't used too much. Calif rules allow one sensor to show incomplete, but not two.

I'll deal with it soon, and don't start sending posts telling me to move to Montana!

Check out the free Torque app first. Might not need the pro.

Thanks for the input, I'm going to order the bluetooth plug-in from Amazon (12.68) and the Torque pro app. Even if it doesn't tell me what I need for this problem, it looks like a really cool tool to have for all my cars. The mechanic said a sensor wasn't showing up even though the check engine light never went on. Could be the heater on a sensor or something else. I'm also going to pick the brain of a friend who's a pro and is smog certified. I would have taken it to him in the first place but his garage can't handle a 32' RV.

dclark1946 wrote:
If you want to do your own checking with minimum investment and you have a smart phone or tablet purchase an ELM327 bluetooth (Android) or WiFi (Apple) OBD2 module and a scanner app and you are in business. I did this for about $30.

Dick

This is what I did. Use a cheap android phone that I never activated just to run Torque (free OBD2 app). Couldn't find a decent OBD2 app for free for iOS.

I was changing an O2 sensor at a USAF auto skills shop. They had a good tool crib but nothing they had would get onto it.
Vehicle wasn't V10, not even a Ford, but I had this little Harbor Freight tool and it was just the ticket. Highly recommended in limited access situations.

If you want to do your own checking with minimum investment and you have a smart phone or tablet purchase an ELM327 bluetooth (Android) or WiFi (Apple) OBD2 module and a scanner app and you are in business. I did this for about $30.

Dick