I don't like the coolant temperatures I'm seeing *SOLVED*

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

OP
OP
EdGs

EdGs

Senior Member
Joined
Nov 29, 2020
Posts
5,482
Reaction score
11,628
Location
FL
Ram Year
2015
Engine
Hemi 5.7L
I think the fan relay or temp sensor is not coordinating with each other to turn the fans on may have to add a fan between grill and radiator
Get one of those Calorstat 192° t-stats. Only cost you about $20 to try it.

I would also get a gallon of concentrate from your dealer #68163848AC, and a gallon of distilled water, $1.39 @ walmart.

I DO NOT recommend anything other than factory coolant.

Then you will have 2 gallons of 50/50 for <$30.
 
Last edited:

Mojo88

Senior Member
Joined
Feb 4, 2024
Posts
717
Reaction score
1,847
Location
Rhode Island
Ram Year
'19 Longhorn Gen5 ORG
Engine
Hemi 5.7L non-eTorque
Hello may ask what tunner you have I would like to have one to change when my fans would turn into I run very hot 225 to 230 cools down if I turn the ac on but that makes the fans come on when I do that

First off, you have a PWM (pulse width modulation) fan setup. Pulse Width Modulation (PWM) is a technique used to control the power delivered to electrical devices by varying the width of the pulses in a digital signal. It allows for precise control of analog devices like motors and LEDs by simulating a varying voltage through a series of on and off signals, where the ratio of on time to the total cycle time is known as the duty cycle. In other words, it's not just on or off, it's virtually any speed that's called for............

I am using HP Tuners to control my ECT (engine coolant temp), along with a Mishimoto 180* stat. In the pics (snapshots of the HP Tuners pages) below I show the stock settings, and you can see these engines are programmed to run hot. I also included another pic which shows my adjustments to the PWM settings, along with some comments.

The cooling system works as a team: the stat, the fan and the AGS are the three players. You can't really control ECT properly (IMHO) unless you synchronize the whole team.

PWM22.jpg

PWM33.jpg
 

T Ram 20

Member
Joined
Feb 14, 2023
Posts
34
Reaction score
35
Location
USA
Ram Year
2020
Engine
5.7l
First off, you have a PWM (pulse width modulation) fan setup. Pulse Width Modulation (PWM) is a technique used to control the power delivered to electrical devices by varying the width of the pulses in a digital signal. It allows for precise control of analog devices like motors and LEDs by simulating a varying voltage through a series of on and off signals, where the ratio of on time to the total cycle time is known as the duty cycle. In other words, it's not just on or off, it's virtually any speed that's called for............

I am using HP Tuners to control my ECT (engine coolant temp), along with a Mishimoto 180* stat. In the pics (snapshots of the HP Tuners pages) below I show the stock settings, and you can see these engines are programmed to run hot. I also included another pic which shows my adjustments to the PWM settings, along with some comments.

The cooling system works as a team: the stat, the fan and the AGS are the three players. You can't really control ECT properly (IMHO) unless you synchronize the whole team.

View attachment 581336

View attachment 581335
So
I will get figured out somewhere some how I usually do I'll keep digging
Well today it hit 118 idleing and low speed fan came on so I don't know hopefully it stays working.
 

LoneStarHemi

Member
Joined
Jun 2, 2014
Posts
56
Reaction score
23
Ram Year
2014 RAM 1500
Engine
Hemi 5.7
2014 Ram equipped just like yours but with just under 100k. I installed a Murray 180 T stat when the truck was almost new and it finally stuck this past December. I caught it right away but it did kiss 240 briefly. No warning lights so I guess it didn't hit whatever that preset temperature is.

I put the OE t-stat back in because it was December and that's what I had handy lol. Just this week, so about 3 months later, my water pump puked it's guts. A little squeaky the past few cold startups was about the only warning I got.

I went with the Master Pro from O'Reilly's. Not the cheapest but not the most expensive however, the ones that were more expensive included the thermostat housing and a new fan clutch. I read poor reviews about the fan clutch and I'm happy with the Oe so I stuck with that. Put it all back together yesterday with a new Murray 180 T stat as well. All seems well so far.
 
Back
Top