that is really terrible because if the wrench light comes on more than it must be set too low that it is always being triggered...sounds somewhat like a money making idea to me, lets set the temp monitors to alarm and throw a code at something that is commonly hit. that way they need to come in and we can make them put in all new stuff at a price.
No its not a gimmick. You have NO idea how many short blocks ive done in these engines due to higher temp failures and im not talking a slightly melted piston im talkin PISTON gone wrist pin and connecting rod only remaining in the hole.
You dont ever want my opinion on the engine, I despise of them. I can rant for hours on them and why they should be bought back by ford or repowered by a 6.7 I know one thing if i had bought one and it left me on the side of the road and i found out it wouldnt be done for a while because theres literally dozens more of them at the dealership waiting ahead of mine, id cancel the insurance, yank the plates off, and tell ford they just bought it. Unless it was something I INTENTIONALLY DID.
Its not just oil and coolant temps, it also monitors your WIF sensor closely. It is monitoring things to PREVENT you from Wiping out an EGR cooler, melting down a piston, clog up a DPF, or wipe out your High Pressure Fuel System.
When ive seen more 250-550 cabs up in trucks that are WORKED for thier intended purposes perfectly maintained and engines being yanked... I guess ford sorta woke up and decided if they derated the engine at higher temps or if the water in fuel sensor reads slightly out of whack, in other words, ford not only lost money on this engine, their customers lost money on this engine, People not able to use them for work and pay the truck off. Theyre just trying to keep this platform from costing YOU time and when your warranty is up MONEY along with thier MONEY.
Just hope they redesign the radiators for a permanent fix. im getting tired fast of doing radiators and front covers. There could be a 100 other things id rather do but cant because the 6.4s have priority.