10 speed transmission issues?
06-10-2019, 10:48 AM
#21
Senior Member
According to insiders, Ford does their own testing and the dyno testing done for certification with a 140 degree thermostat. Turbo motors hate heat. Running colder will make more power and keep every part running better. The high temp factory thermostat is picked solely for emissions and extreme cold heating capacity.
The only reason to not go even colder is that you don't want it so cold that the ECU goes into an enrichment cycle to try and warm the motor. That would be down under 100 degrees or so. I doubt we have the cooling capacity to keep the temp that low regardless of thermostat, but that's the only concern. Well, that and if you want heat for the winter.
Additional note...the factory electric fans are programmed to work along with the thermostat. For optimal cooling, you want your tuner to change the fan settings to work in tandem with the temp of thermostat that you run.
The only reason to not go even colder is that you don't want it so cold that the ECU goes into an enrichment cycle to try and warm the motor. That would be down under 100 degrees or so. I doubt we have the cooling capacity to keep the temp that low regardless of thermostat, but that's the only concern. Well, that and if you want heat for the winter.
Additional note...the factory electric fans are programmed to work along with the thermostat. For optimal cooling, you want your tuner to change the fan settings to work in tandem with the temp of thermostat that you run.
06-10-2019, 10:52 AM
#22
Senior Member
My '19 was running between 200 and 208 stock. Way higher than I liked.
With the 170 thermostat it is running between 180 and 185.
06-10-2019, 10:58 AM
#23
Senior Member
200-208 sounds fantastic. My 17 has some kind of crazy high thermostat, it ran more like 220 at all times, and after a single pull through a couple of gears i'd be at 235-240.
If you think it was the radiator or something else, with the 170 thermostat it runs in the upper 170's to low 180's with it.
If you think it was the radiator or something else, with the 170 thermostat it runs in the upper 170's to low 180's with it.
06-10-2019, 11:16 AM
#24
Senior Member
Stock thermostat in my truck was marked 195F.
Not sure about your '17, but my '19 thermostat is in a different location that previous years. Took be a bit of studying to figure out where it is now.
Not sure about your '17, but my '19 thermostat is in a different location that previous years. Took be a bit of studying to figure out where it is now.
06-10-2019, 04:22 PM
#26
Senior Member
I had one of the TSB applied with my 9/17 build after all of the Adaptive Learning I went for a Tune and haven't looked back they have had to do some Tune Adjusts,Its running great still this 10 speed is cold blooded takes time to warm up after initial start up,it took some time be Patient
06-10-2019, 04:36 PM
#27
When cold mine will ocassionally wind out and then bang HARD into 4th gear but after it warms up a little everything's just fine. Love it except for that annoying issue. And for the record my truck currently has 9300 miles on it.
06-10-2019, 04:47 PM
#28
Good to know; thanks. It's higher than I expected, but I wouldn't go lower than 185 myself. As far as location, it should be the same as 2017s, since that's when the 3.5 2nd generation debuted. How easy was the change? Just curious. Thx.
06-10-2019, 04:52 PM
#29
Senior Member
My point is just to research before you buy any to make sure it's truly correct for our platform.
Super, super easy to change. It uses a rubber gasket on the thermostat that you remove from the original and install on the new one. No gasket to mess with or sealant.
Hardest part is going to the dealer and buying the unique coolant and mixing it 50/50 with distilled water if you have a 2019 with this new glow in the dark yellow stuff. Seems Ford brings out a new coolant every time I buy a new one. I still have the last two types on my shelf.
06-10-2019, 04:53 PM
#30
Senior Member
I just got back from a 4500 mile trip, and now have almost 10K miles on my 2018 with the 10 speed. And so far, I have not had any more issues with it than I have had with any other automatic trans.