#1-get a 170° thermostat
#2-get a custom tune
I don't have an intake or downpipes but my truck stays between 179° and 193° when it is 80° out...and hasn't gotten over 200° for as long as I can remember
This is a discussion on Coolant operating temperature within the F150 Ecoboost Problems forums, part of the F150 Ecoboost Forum category; Truck is a 2011 F150 Platinum Ecoboost 4x4 with 90k miles. Mods are S&B intake, RX catch can, SCT livewire TS, and Solo catless DPs. ...
Truck is a 2011 F150 Platinum Ecoboost 4x4 with 90k miles. Mods are S&B intake, RX catch can, SCT livewire TS, and Solo catless DPs. I normally watch my temperatures and gauges like a hawk (through the livewire) About a month ago I started noticing higher than normal coolant temperatures at highway cruising speeds. For example, my coolant used to run at around 200-205 on the hwy cruising at 75mph. Now it runs at around 210-215. It doesn't seem to be dependent upon exterior temperature, it was 45 degrees outside one day and it was still running hotter. It isn't like I'm overheating either, I drive some decent hills on my normal commute and even on a hard pull, the hottest I'll see is around 225. One other odd effect is I'll see my Air Intake Temp rise randomly. I was towing around 6k and the temps were running around 215-220 on a slight but steady grade I saw the intake temperature rise to 90 even though it was only 65 outside. AIT is normally about 2 degrees cooler than the exterior temperature.
The ONLY thing I've done recently is the catless down pipes. While I'm not tuned for them yet, I still can't see how this could affect the engine temperature this much. After I noticed the higher temps I even turned the tune down from the 91 octane to the 87 octane (Still physically running 91 premium fuel in the truck) but no change Is the water pump starting to fail? This doesn't seem like a thermostat issue to me. I have changed the coolant within the past 10k miles so shouldn't be any major issues there. Heat is my enemy and summer is coming quick so I'd like to get this figured out soon. Even before this I was looking at the race radiators but if this ends up being a water pump issue that would just be a temporary band aid.
Thanks in advance for the help!
Have you ever had the coolant flushed? I'm a believer in fluid changes!
That old man, he don't think like no old man.
"He's pinned under an outcropping of rock. Lucky for him, the rock kept the dirt from burying him alive."
"I thought I was wrong one time, but I was mistaken." Command Sergeant Major Jim
Your = Is that your truck? Possessive.
You're = You are. E.g., You're a nice old boy, and I like your truck.
'15 Platinum Supercrew, 3.5, 3:31 differential, 4x4, White, comes when you call it.
COMMON SENSE SHOULD BE MORE COMMON
Your truck is by far more built than mine, and I will admit I don't know the whole science behind changing to a cooler T'Stat. But I do know for a fact that when I had the stock one in I was reaching temperatures upwards of 212°.
2013 XLT Off-Road 4x4 SCrew SB, Ecoboost, 5* 89 p/t, Rx dual valve catch can and CSS, 4" MBRP SS single exit cat back, Resonator delete, Bilstein 5100's all around, front set to 1.5", Fuel Trophy Anthracite wheels 18x9 +20, DuraTracs 295/65/18, Linex bedliner, Weathertech digital floor liners, Rado Auto black billet bumper insert, Stant locking fuel cap, Front license plate holder delete, Smith & Wesson MP9c security system
Ok, I definitely can't argue with the logic. But isn't the stock t stat 190??? So if my truck is always running at 210+ shouldn't it always be open anyway? I'm definitely willing to try the $40 experiment, it just seems like something else is off. Maybe an air bubble in the system somehow?