Longtime lurker, first time poster so I'm just going to get this started, sorry for the length. Here's a taste, --Transmission Fluid In Wiring Harness-- and a squirrel, and then some.
08 FJ / 213,183-miles / Automatic
Noticed an uptick in fuel consumption lately, ended up throwing codes for the following,
-P0171 -P2A00 -P0138 -P0101
For some reason I had a feeling the problem was electrical so I took it to the dealership. They diagnosed as a bad AF Sensor, Bank 1, Sensor 1, and proceeded to fix.
But the next day the same codes got thrown, gas consumption was up still, and I was concerned seeing as how I had barely driven 50 miles since the "fix"
So they took the car back and that's where things got weird.
The tech could NOT figure out why the codes kept tripping or why the OEM parts where causing incorrect voltages, the AF sensor, bank 1, sensor 1 would run at 3.3-7+V when it's supposed to sit steady at 3.0V
This video here is basically the first diagnosis, thinking it was only the sensor that was bad: https://tvin.s3-accelerate.amazonaws.com/d5e5437ab539dad89cbd95979bb99ae2.mp4?t=1656025449440
Then they swapped in the aftermarket one I had in originally and surprisingly things were fine voltage wise.... until you got on the gas and voltages would go out of range, 3.7+V on the AF sensor b1, s1, again. They even pulled a techs OEM sensor out of his FJ and swapped that in, and it still had the same problem as the other OEM part and they couldn't figure it out.
They also put in new spark plugs and o2 sensors in at this point.
-would like to add that the car drove and worked fine at this point, minus the extra gas consumed with faulty sensor-
So that's when they dug deeper......
After 2-3 weeks they sent this video.
^The Toyota dealership I took it to ended up contacting Toyota directly and brought this all the way up to Toyotas Engineering Division and their response after 2 weeks was basically sorry, this is a completely unique issue we've never seen before, and were unable to diagnose further.
And so, what they are saying is, well the tech at the dealership at least, was that they found trans fluid in every connector plugged into the ECU, and that transmission fluid is "somehow" being fed through the Main Engine Harness, the Transmission Harness, and the Front Door Harness, and being pushed into the ECU causing shorts across the board. See below for example of codes caused by the shorts, as well as, see second video above for example of what connectors are affected.
I brought it in with those 4 codes above and now it's come back with the following,
-P2716 -P0778 -P0748 -P0222 -P2759 -P2610 -P0986 -P0971-P0974 -P2743 -P0713 -P0171 -P0977, runs like ****, sounds like ****, zero acceleration, literally much more broken then how I brought it in, I've never seen it drive or operate like this.
They said to fix it would require a new harness for each listed above, as well as a new ECU as more and more fluid has been pushed into it, which they say is now causing all these new codes AND shorts, which is causing the car to barely run, which is a new thing as it was great before I brought it in. smh.
So please for the love of all things good in the world,
Has anyone else had this problem before???!? Or how the hell this could of even happened?? I can't find anything on it and Toyota themselves said it was unique and I don't know what to do I love my car I don't want to lose it I'd do anything!
Maybe some techniques on cleaning the harnesses and trying to salvage them? And only getting a new ECU idk?
Or anybody parting out an old FJ... I could use some harnesses and an ECU
Any ideas would be appreciated!!
Sorry for the video links the files were to big to upload, if the individual ones don't work then the main one below, which has all 3 videos works as well, you just have to scroll between videos 1 and 3 on the page while ignoring video 2 as it has no sound/issues while recording. 910167 -not sure why it's shortening the link to this
and yes the link above contain my name, either said outloud or displayed on the page but so does my profile so please try to ignore that I'm desperate lol
tl;dr -Transmission fluid is "somehow" being fed through the Main Engine Harness, the Transmission Harness, and the Front Door Harness, and being pushed into the ECU causing shorts across the board and major damage to all systems associated. Quoted me about 10k usa buckaroos to fix my poor thing so any outside help would be much loved!
Again sorry for the length hopefully some of y'all have hung on until the end and can help!!
08 FJ / 213,183-miles / Automatic
Noticed an uptick in fuel consumption lately, ended up throwing codes for the following,
-P0171 -P2A00 -P0138 -P0101
For some reason I had a feeling the problem was electrical so I took it to the dealership. They diagnosed as a bad AF Sensor, Bank 1, Sensor 1, and proceeded to fix.
But the next day the same codes got thrown, gas consumption was up still, and I was concerned seeing as how I had barely driven 50 miles since the "fix"
So they took the car back and that's where things got weird.
The tech could NOT figure out why the codes kept tripping or why the OEM parts where causing incorrect voltages, the AF sensor, bank 1, sensor 1 would run at 3.3-7+V when it's supposed to sit steady at 3.0V
This video here is basically the first diagnosis, thinking it was only the sensor that was bad: https://tvin.s3-accelerate.amazonaws.com/d5e5437ab539dad89cbd95979bb99ae2.mp4?t=1656025449440
Then they swapped in the aftermarket one I had in originally and surprisingly things were fine voltage wise.... until you got on the gas and voltages would go out of range, 3.7+V on the AF sensor b1, s1, again. They even pulled a techs OEM sensor out of his FJ and swapped that in, and it still had the same problem as the other OEM part and they couldn't figure it out.
They also put in new spark plugs and o2 sensors in at this point.
-would like to add that the car drove and worked fine at this point, minus the extra gas consumed with faulty sensor-
So that's when they dug deeper......
After 2-3 weeks they sent this video.
^The Toyota dealership I took it to ended up contacting Toyota directly and brought this all the way up to Toyotas Engineering Division and their response after 2 weeks was basically sorry, this is a completely unique issue we've never seen before, and were unable to diagnose further.
And so, what they are saying is, well the tech at the dealership at least, was that they found trans fluid in every connector plugged into the ECU, and that transmission fluid is "somehow" being fed through the Main Engine Harness, the Transmission Harness, and the Front Door Harness, and being pushed into the ECU causing shorts across the board. See below for example of codes caused by the shorts, as well as, see second video above for example of what connectors are affected.
I brought it in with those 4 codes above and now it's come back with the following,
-P2716 -P0778 -P0748 -P0222 -P2759 -P2610 -P0986 -P0971-P0974 -P2743 -P0713 -P0171 -P0977, runs like ****, sounds like ****, zero acceleration, literally much more broken then how I brought it in, I've never seen it drive or operate like this.
They said to fix it would require a new harness for each listed above, as well as a new ECU as more and more fluid has been pushed into it, which they say is now causing all these new codes AND shorts, which is causing the car to barely run, which is a new thing as it was great before I brought it in. smh.
So please for the love of all things good in the world,
Has anyone else had this problem before???!? Or how the hell this could of even happened?? I can't find anything on it and Toyota themselves said it was unique and I don't know what to do I love my car I don't want to lose it I'd do anything!
Maybe some techniques on cleaning the harnesses and trying to salvage them? And only getting a new ECU idk?
Or anybody parting out an old FJ... I could use some harnesses and an ECU
Any ideas would be appreciated!!
Sorry for the video links the files were to big to upload, if the individual ones don't work then the main one below, which has all 3 videos works as well, you just have to scroll between videos 1 and 3 on the page while ignoring video 2 as it has no sound/issues while recording. 910167 -not sure why it's shortening the link to this
and yes the link above contain my name, either said outloud or displayed on the page but so does my profile so please try to ignore that I'm desperate lol
tl;dr -Transmission fluid is "somehow" being fed through the Main Engine Harness, the Transmission Harness, and the Front Door Harness, and being pushed into the ECU causing shorts across the board and major damage to all systems associated. Quoted me about 10k usa buckaroos to fix my poor thing so any outside help would be much loved!
Again sorry for the length hopefully some of y'all have hung on until the end and can help!!