Cooling Fans
Logistics Pro
Joined: Jan 2010
Posts: 4,100
Likes: 1,635
You're a little hot, but all trucks run in those temp ranges now.
Modern trucks and cars are designed to run hotter, even while empty, because a hotter engine (particularly on direct-injection, which a lot of motors are going to) will ignite the fuel better and get a cleaner burn. It's all about emissions.
The dealer isn't lying to you when they tell you nothing is wrong - it is probably coming back as inside specs on their computers.
My 6.4 Hemi runs about 220-225 on a hot day empty, about 240 on a hot day towing. It's pretty much normal in newer vehicles.
Modern trucks and cars are designed to run hotter, even while empty, because a hotter engine (particularly on direct-injection, which a lot of motors are going to) will ignite the fuel better and get a cleaner burn. It's all about emissions.
The dealer isn't lying to you when they tell you nothing is wrong - it is probably coming back as inside specs on their computers.
My 6.4 Hemi runs about 220-225 on a hot day empty, about 240 on a hot day towing. It's pretty much normal in newer vehicles.
Thread Starter
|
Senior User
Joined: Apr 2004
Posts: 293
Likes: 0
Perspective
You're a little hot, but all trucks run in those temp ranges now.
Modern trucks and cars are designed to run hotter, even while empty, because a hotter engine (particularly on direct-injection, which a lot of motors are going to) will ignite the fuel better and get a cleaner burn. It's all about emissions.
The dealer isn't lying to you when they tell you nothing is wrong - it is probably coming back as inside specs on their computers.
My 6.4 Hemi runs about 220-225 on a hot day empty, about 240 on a hot day towing. It's pretty much normal in newer vehicles.
Modern trucks and cars are designed to run hotter, even while empty, because a hotter engine (particularly on direct-injection, which a lot of motors are going to) will ignite the fuel better and get a cleaner burn. It's all about emissions.
The dealer isn't lying to you when they tell you nothing is wrong - it is probably coming back as inside specs on their computers.
My 6.4 Hemi runs about 220-225 on a hot day empty, about 240 on a hot day towing. It's pretty much normal in newer vehicles.
Fleet Mechanic
Joined: Nov 2016
Posts: 1,634
Likes: 72
Was it filled so that the coolant level was above the word MAX?
Thread Starter
|
Senior User
Joined: Apr 2004
Posts: 293
Likes: 0
What year?
Are you still under warranty? There are other members that have delt with the same problem.
Cruising on I 8 at 75 mph, ambient temp over 105, my engine temp hit 211 degrees with no trailer.
https://www.f150forum.com/www.f150fo...d.php?t=404556
Cruising on I 8 at 75 mph, ambient temp over 105, my engine temp hit 211 degrees with no trailer.
https://www.f150forum.com/www.f150fo...d.php?t=404556
Fleet Mechanic
Joined: Nov 2016
Posts: 1,634
Likes: 72
I only ask that specifically because my 2017 exhibited similar behavior when mine was at the fill line located UNDER the word Max.
---I'm not trying to be annoying or thinking you're unintelligent....it's just so similar to what I experienced that I want to make sure of the line. Sorry to belabor the question.
Thread Starter
|
Senior User
Joined: Apr 2004
Posts: 293
Likes: 0
No Sir, not taking it that way at all. I read about coolant level and possible air in the system and had the system flushed and filled by Ford and even added so coolant to just above the max level. I take it adding coolant to yours fixed the problem?
Fleet Mechanic
Joined: Nov 2016
Posts: 1,634
Likes: 72
Yes sir, it fixed my problem once i added coolant to the seam of the tank, which is just above word Max.
I had a small leak, it turned out to be the quick connect where the hose attaches to the top of the reservoir.
Thank you for taking my questions in stride.
I had a small leak, it turned out to be the quick connect where the hose attaches to the top of the reservoir.
Thank you for taking my questions in stride.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
Thread Starter
|
Senior User
Joined: Apr 2004
Posts: 293
Likes: 0
Why do you figure that did the trick?
Fleet Mechanic
Joined: Nov 2016
Posts: 1,634
Likes: 72
I don't honestly know why it fixed it....but it fixed it.
My truck started running hot just driving down the freeway (no trailer, no passengers) and the radiator fans ran on high all the time just casually driving through the neighborhood at 35mph.
My coolant was at the Min line on the reservoir. After adding coolant, no more issues.
Then, it started doing the same thing again and I found the coolant level had dropped back to Min.
I realized I had a small leak. I fixed the leak, refilled the tank to Max, and all is working properly again.
My truck started running hot just driving down the freeway (no trailer, no passengers) and the radiator fans ran on high all the time just casually driving through the neighborhood at 35mph.
My coolant was at the Min line on the reservoir. After adding coolant, no more issues.
Then, it started doing the same thing again and I found the coolant level had dropped back to Min.
I realized I had a small leak. I fixed the leak, refilled the tank to Max, and all is working properly again.
Thread Starter
|
Senior User
Joined: Apr 2004
Posts: 293
Likes: 0
Awesome! I haven’t had that luck yet. Topped it off and it’s stayed there, had Ford flush and refill, they actually only filled to min line lol, topped it off again and it’s actually been even hotter since they flushed/refilled. Still think the air in the system might be an issue but I can’t seem to sort it out. Ford wants to put a new tstat in it, 195 of course (Same I have currently for a 17), and “go from there”
Thread Starter
|
Senior User
Joined: Apr 2004
Posts: 293
Likes: 0
Any boost and the temps rise rapidly, 232 empty is common, 230 seems to be the ‘cruising’ temp. With the tstat fully open at 217 I’m clearly beyond where it should be, unloaded and not under boost.
Are you still under warranty? There are other members that have delt with the same problem.
Cruising on I 8 at 75 mph, ambient temp over 105, my engine temp hit 211 degrees with no trailer.
https://www.f150forum.com/www.f150fo...d.php?t=404556
Cruising on I 8 at 75 mph, ambient temp over 105, my engine temp hit 211 degrees with no trailer.
https://www.f150forum.com/www.f150fo...d.php?t=404556
Thread
Thread Starter
Forum
Replies
Last Post
89straight6ford
1987 - 1996 F150 & Larger F-Series Trucks
2
Jun 23, 2019 05:24 PM
Traildust
1999 - 2003 7.3L Power Stroke Diesel
4
Apr 26, 2016 04:42 PM
cactusflower
Cooling, Heating, Ventilation & A/C
3
Sep 17, 2005 05:40 PM