Limp mode due to oil temp is theoretical at this point. Ive only heard of it happening to one person who was doing several wide open pulls in quick succession without cooling in between. More than likey it was due to coolant temperature or something else.
Oh chat GPT says it's true so it must be!because my son is a certified ford tech and says that Ford ECUs will absolutely do this - and even chat GPT says it, and includes sources such as DTcodes.com
not trying to argue with anybody but youâre opinion is just that- and the whole point of a forum is an exchange or ideas
Where is your proof it doesnât outside of anectodral ?
1. Ford PCM uses oil temp for protection (real, documented behavior)
From Ford diagnostic logic (OBD / service-level documentation):
- The PCM uses oil temperature input to:
- Adjust cam timing (VCT)
- Track oil degradation
- And critically:
- âinitiate a soft engine shutdown⊠reducing power by disabling cylindersâ
This is the closest thing to âofficialâ wording youâll find without a paid Ford workshop manual.
What this proves:
- Oil temp (real or modeled) can directly trigger power reduction / limp-like behavior in Ford systems.
ChatGPT merely linked to the service tool website describing how Ford ECUâs work . Not sure why youâre being an ass.So let's look at some actual evidence vs AI babble
Thanks for posting that. I just re-read it, and, honestly there is not enough information presented to conclude that it is the inferred oil temperature that caused the 4500 rpm limit. Let me be clear that I am not saying it was not. It may have been. We just do not know from that thread. I did ask MMR for an update to that thread in January (see final post), but nothing.
I ld bet that posters limp mode experience was due to something else.
Its not inferred. We all have digital numbers to look at. The issue is the assumption of what is "too hot", and what the limits of the engine are. This was never a topic of worry before we had these numbers to look at and people started to second guess Ford engineering based on a lack of personal understanding. There are still tons of people out there who wrongly think a 220â° operating temp is too hot.
Perhaps I misunderstood you. By "inferred" are talking about the computer algorithm that determines the temperature rather than a physical sensor?
That's kind of what I was getting at, I see many with questions concerns over this, but have not seen anyone actually say that it has happened and for what cause. I am sure the other temp readings will have their own "red zone" which could trigger limp mode for other reason. I say don't worry about it until it actually happens!
lol, no one was saying it wasn't a thing... just that the 280 is wrong and it actually is not as common as people make it out to be.because my son is a certified ford tech and says that Ford ECUs will absolutely do this - and even chat GPT says it, and includes sources such as DTcodes.com
not trying to argue with anybody but youâre opinion is just that- and the whole point of a forum is an exchange or ideas
Where is your proof it doesnât outside of anectodral ?
1. Ford PCM uses oil temp for protection (real, documented behavior)
From Ford diagnostic logic (OBD / service-level documentation):
- The PCM uses oil temperature input to:
- Adjust cam timing (VCT)
- Track oil degradation
- And critically:
- âinitiate a soft engine shutdown⊠reducing power by disabling cylindersâ
What this proves:
- Oil temp (real or modeled) can directly trigger power reduction / limp-like behavior in Ford systems.
There is no oil temp sensor... it is in fact inferred, based on CHT and oil pressure and whatever else ford thinks is relative.
