Overheat Code on Startup - Where is the Engine Temperature Sensor?

[Grandaccess]

Solution: I have had that happen, I blew a lower hose and it over heated then after I put water in it and let it cool for a few hours I started it and it said it was over heating and kept me in limp mode, there were not even any codes set but I cleared codes "anyway" from my ODB reader it must do something else unseen? and everything was back to normal, that was exactly a year ago and have had No other issues

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[XionUAV]

Solution: I have had that happen, I blew a lower hose and it over heated then after I put water in it and let it cool for a few hours I started it and it said it was over heating and kept me in limp mode, there were not even any codes set but I cleared codes "anyway" from my ODB reader it must do something else unseen? and everything was back to normal, that was exactly a year ago and have had No other issues

What I'm curious about is if the codes are still stored after power is removed. In every other vehicle I've worked on the codes clear when you disconnect power. The several codes showing were there after disconnecting the battery for a time and reconnecting. That would be a new one for me.

 

[airline tech]

What I'm curious about is if the codes are still stored after power is removed. In every other vehicle I've worked on the codes clear when you disconnect power. The several codes showing were there after disconnecting the battery for a time and reconnecting. That would be a new one for me.

It depends on the Level of the DTC, a high-level DTC or (Perm) DTC will hold in memory and can only be cleared with a scan tool, however it will still hold itself in history (historical data) until a drive cycle (self-test) is performed or a specific number of warm up drive cycles (generally 3) and the PCM passes the test.

Its purpose is to prevent owners from disconnecting the battery, just before an emissions test to get a passing grade. (They need to see a drive cycle test pass - on all emissions related systems)
This is what testing centers look at, not just (is the light - off - PASS)
It is the OBD Readiness Test - Results

 

[Grandaccess]

I never disconnected the battery because I had just blown a hose, I had no idea a simple over heat would do that, but somehow it does, it was a few days too, I had to order the hose and install it filled it and when I started it it showed I was still in over heat and limp mode, I dont know what made me think to clear the codes when there were none showing, something was stuck somewhere

 

[XionUAV]

It depends on the Level of the DTC, a high-level DTC or (Perm) DTC will hold in memory and can only be cleared with a scan tool, however it will still hold itself in history (historical data) until a drive cycle (self-test) is performed or a specific number of warm up drive cycles (generally 3) and the PCM passes the test.

Its purpose is to prevent owners from disconnecting the battery, just before an emissions test to get a passing grade. (They need to see a drive cycle test pass - on all emissions related systems)
This is what testing centers look at, not just (is the light - off - PASS)
It is the OBD Readiness Test - Results

I wasn't aware there were any codes retained in memory after disconnecting the battery. Interesting.

Yeah I've done the drive around, stop, start, watching the readiness readout more than a few times after doing repairs to get 2 out of 3 to show ready. That's what's required here to pass. That's also why I need to get the steering rack sorted so I can do that.

 

[XionUAV]

I never disconnected the battery because I had just blown a hose, I had no idea a simple over heat would do that, but somehow it does, it was a few days too, I had to order the hose and install it filled it and when I started it it showed I was still in over heat and limp mode, I dont know what made me think to clear the codes when there were none showing, something was stuck somewhere

Now we know.

Any idea why your hose blew? That seems very odd for a 3-year-old vehicle.

 

[Grandaccess]

Now we know.

Any idea why your hose blew? That seems very odd for a 3-year-old vehicle.

right in the center of the hose there was a Pin hole, its open on the bottom of the truck so it could have been road trash...
It had over heated before I knew what was wrong, I added water and it stayed in for 2 days then over heated again, I was parked at a store and noticed water on the ground in the front driver side, and when I looked up there I seen the hole under pressure was just pissing, I called Ford there were no hoses in the system they said they couldnt even get one, I said if I bring it in how long can it take? he told me since he couldnt even order one it could sit there weeks LOL I found a high end after market company that carried mishimoto it was $175 WTF could I do I had to order it!
I got the right antifreeze because these trucks think they are special LOL
I started the truck and it still showed as over heating and in limp home, but wasnt throwing codes but I wondered if clearing it anyway would reset the dash so I tried it and it just worked and I dont even know why

 

[airline tech]

You, sir, are a stud.

When I looked at the DTC's using FORscan, it had the Ambient Air Sensor error and a "P" error that I regretfully did not document. I did save the profile though so maybe the codes are logged somewhere?

However, I just went out and quickly looked at the codes using Torque and a Bluetooth dongle. There were a bunch of them. Most were "Powertrain." Cleared them and was astounded that on the next startup the gauge was normal, or cold. Brilliant! Obviously it will need to run for a while to see if the codes come back or not.

Regarding the coolant, it took somewhere over 2 gallons but has only run for a total of 10 minutes at idle to calibrate the new throttle body. It still needs a proper bleed.

One more question that might need a separate thread, unless it's been covered before. I do try to search the threads but the results can be all over the place.

The steering rack is cracked around the case with a gap of a good 2mm. I sourced a used rack but at the time did not realize it needs to match the vehicle trim level. I've read that programming the electronics in the rack can only be done by the dealer, and they won't do it unless it's a new rack and they install it. Others I've asked didn't know if FORscan was capable of programming the rack or not. I honestly can't remember what the trim level was of the donor vehicle.

Therefore unless it's known for sure that FORscan can program the rack for the proper trim level, XLT FX4 in my case, I'm considering swapping the electronics boxes on the racks, if that's even possible. That project is a few rows down the current list but the rack will definitely need to be sorted before the Ranger goes out on the road for any test drives.

Thank you to everyone for your input and help.

Ref: The EPAS (Steering Rack)

This is from the manual:

If a new steering gear was installed, download the PSCM configuration from the scan tool to the new PSCM.
Refer to: Module Programming (418-01 Module Configuration, General Procedures)

From what I understand from this statement (it is nothing more than - reloading the As-Built data)
So, it is possible to be done with Forscan, I am not sure exactly how (steps involved) but it is basically using the downloaded As-Built file for the PSCM and then loading it back onto the module.

But I believe this would be for an (NEW) Module - that has never been installed. Key Word (NEW)
because if you do some As Built compares the PSCM remains constant the same across the board with (1) exception and that is if you have the (Factory -ASS) delete.
It would tie into the power dump when ASS is active, and engine is off

So, a possible work around would be, to view your As-Built data via Ford Services, plug in Forscan and tab to the PSCM module and see if they match.

When you install the (used) rack, and then connect Forscan , when it scans the modules (i would use a new profile) it will pick up the new module (PSCM)

You can then side by side compare - The Before & After (Module Data) and make any changes that are different (if any)

This is just a GUESS, but worth a try, as I do not see any reason it would be a major issue.

The only other thing is that the Toe will need adjusted (alignment)

 

[XionUAV]

Ref: The EPAS (Steering Rack)

This is from the manual:

If a new steering gear was installed, download the PSCM configuration from the scan tool to the new PSCM.
Refer to: Module Programming (418-01 Module Configuration, General Procedures)

From what I understand from this statement (it is nothing more than - reloading the As-Built data)
So, it is possible to be done with Forscan, I am not sure exactly how (steps involved) but it is basically using the downloaded As-Built file for the PSCM and then loading it back onto the module.

But I believe this would be for an (NEW) Module - that has never been installed. Key Word (NEW)
because if you do some As Built compares the PSCM remains constant the same across the board with (1) exception and that is if you have the (Factory -ASS) delete.
It would tie into the power dump when ASS is active, and engine is off

So, a possible work around would be, to view your As-Built data via Ford Services, plug in Forscan and tab to the PSCM module and see if they match.

When you install the (used) rack, and then connect Forscan , when it scans the modules (i would use a new profile) it will pick up the new module (PSCM)

You can then side by side compare - The Before & After (Module Data) and make any changes that are different (if any)

This is just a GUESS, but worth a try, as I do not see any reason it would be a major issue.

The only other thing is that the Toe will need adjusted (alignment)

I sincerely appreciate your time in detailing this information. I'll spend some time investigating and documenting the steering parameters in FORscan before replacing the broken rack.

And naturally an alignment will be needed afterward. The tie rods are being replaced as well. It's also getting Bilsteins front and rear with a 2.5" lift up front and new upper control arms. One inch block lift out back.

 

[XionUAV]

right in the center of the hose there was a Pin hole, its open on the bottom of the truck so it could have been road trash...
It had over heated before I knew what was wrong, I added water and it stayed in for 2 days then over heated again, I was parked at a store and noticed water on the ground in the front driver side, and when I looked up there I seen the hole under pressure was just pissing, I called Ford there were no hoses in the system they said they couldnt even get one, I said if I bring it in how long can it take? he told me since he couldnt even order one it could sit there weeks LOL I found a high end after market company that carried mishimoto it was $175 WTF could I do I had to order it!
I got the right antifreeze because these trucks think they are special LOL
I started the truck and it still showed as over heating and in limp home, but wasnt throwing codes but I wondered if clearing it anyway would reset the dash so I tried it and it just worked and I dont even know why

That's crazy, especially that no one had a standard hose in stock.

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