Fuel Cooler
- Thread starter WisconsinHick1
- Start date
Stock cooler use to sit right off to the left of my air dog in the factory spot (I removed it and trashed it). This is not mikes cooler, I had said its mounted like mike had had his cooler mounted. If by what you say, that the hot air from the trans, tcase, motor, ect was not cooling the fuel due to the factory spot, I should be seeing the same results as trashy
Your setup is an huge improvement over stock and it could be even better. Your location and cooler is not the same as Trashy and we do not know if he is pushing or pulling. One thing for sure is the air is much cooler a couple of feet back and you could have better results.
My fan sits to the back side of the cooler and pulls through the it. Only thing is the only thermostat I could find is 180*, so by the time the fan comes on it is already hot. This cooler flows WAY Better than the factory so I was hoping that would be enough to fix my problem but I guess not.
Stock cooler use to sit right off to the left of my air dog in the factory spot (I removed it and trashed it). This is not mikes cooler, I had said its mounted like mike had had his cooler mounted. If by what you say, that the hot air from the trans, tcase, motor, ect was not cooling the fuel due to the factory spot, I should be seeing the same results as trashy
So are you cooling the pressure or return side with yours?
Well there is your problem, ditch the thermostat and put it on a switch. Turn it on after you start the engine and you will probably see much better results.
Are any of you guys cooling your lift pump return as well as the fuel from the engine? I am thinking about putting in a sump and returning all the fuel through the top of the tank.
what model cooler are you running?
yes, mine is connected at the inlet of the cooler. you can see it as the blue line at the top of the cooler in my pic.
I agree. Fans can not play catch up very well so ditch the thermostat. I did a lot of testing with fans and found that if you are expecting high temps, overide the electronics with a switch and turn it on at engine start.
It is a Derale 15950. I got it wired direct this morning so I'll see how it does on the way home from the lake this afternoon.
Well.....that didn't work. Temps still got to 210* a couple times. Guess my next move is to move the cooler for better airflow. Even turned the truck back to stock to see if it would help. By that time the whole tank was probably so hot it was beyond cooling back off.(it's in the mid to high 90s here right now) It's getting really old having to clear the p0087 every time I pull a hill. I wish I could get the fuel temps under control so I can narrow the issue down more. Between my dads trailer and my boat I'm grossing around 24-25k, but my dad pulls the same setup all the time with his stock LMM with no issues.
I guess I've missed a lot in this thread and I havnt been back to read yet. But your chasing a 0087 code with fuel heat? Not bashing just trying to learn.
Sent from my iPhone using Tapatalk
Because I have been told by a couple of people that the hot fuel could be causing a couple of injectors to be returning too much fuel thus causing low fuel rail pressure.
its not a permanent fix for his issue but just like how the GM injector clean helps sometimes, same deal here. it does help fuel econ in the heat though. ive gained 1-2mpg on the last two towing trips ive done.
Good to know.
I'm sure there's a reason everyone cools return fuel other than supply but why?
Sent from my iPhone using Tapatalk
The only reason I can see is that you don't want the tank to boil, other wise your just losing fuel in vapors.