I have noticed a weird problem the last couple longer road trips I have taken in my truck{50 miles+} that I cant remember being an issue till I put my winch on.
It seems once I am on the e-way for more than 40-50 miles at speeds over 65mph my temp guage climbs pretty fast to almost the end of the normal range. As soon as I slow down under 65 I can watch the temp drop back down.
Has anyone noticed this problem with a winch {and lites} out front or am I looking at some other problem? Antifreeze is new and full,rad core is clean and clear,t-stat is newer,have a big e-fan but at those speeds a fan shouldnt matter either way.

Here is a pic of my front end...do you think I have too much frontal area covered?

 

Hmmm, I haven't noticed anything unusual with mine. I'll pay closer attention though and see if I can recreate what you are describing.

-Levino

 

Winch seems unrelated. You have more than enough wind going to the rad.

I hate to say this, but put on the mech fan and you will know for sure what is wrong. I've always had problems w/ my efan.

 

I haven't had mine on since it has been hot out. I plan on installing it next week while I am off so I will let you know.

 

if anything it would be your trans temp because its blocking your trans cooler the most.... but usually temp goes down as your speed goes up with all that extra airflow

 

It seems to me there is plenty of room for air to get to the radiator. I too am thinking its the efan. There has been a few people having high temp problems with their efans.

 

I dont think putting a stock fan on it will make any difference because at those speeds it should be pulling less air through the core than my e-fan.

I never really paid attention to my trans cooler....I did block it pretty good didnt I? I mite have to move that over a bit.

I am wondering if having my winch so far out in front that its punching a hole in the air so far in from of the grill that its causing the air flow to go over the hood and not through the grill until I slow down enough for the fan suction to overcome the airflow enough to pull it through{ at 65mph or less}.

Where are the Airflow Dymatics Engineers??

 

So it must be getting hot enough that the fan is kicking on as well?

When I run long hard trips mine gets hot as well, usually I have to run the fan when running 80+ and driving it really hard. (mountains etc)

 

Fan is on a Painless wiring kit with a 200 degree thermo switch in a coupler in the upper rad hose.I can see on my battery gauge from the needle drop when its on,and its on the whole time its running hot.

Do you think the fan running when I am going 70mph+ is HURTING the airflow across the core?? I wonder if turning it off at those speeds would let more air through from the 70+mph wind??

Tomorrow me and a buddy are going to tape string to the winch and he is going to drive next to me on the e-way and look at the airflow affect on the strings at different speeds.That should show if the air is going over the hood or into the grill.

 

That is a great idea. I don't think your fan is hurting or helping at high speeds...unless it is blowing the wrong direction.