When checking the temp spread or Delta, you need to have the truck up to operating temp, then find a flat section of road about 10 miles or so and hold your RPMs around 1900 for 10 to 15 minutes. The delta should be under 15* on a healthy cooling system. Another thing to check is the temps first thing in the morning on a completely cold engine is the temp spread, your first spread when you started the truck was almost 5* that's a bit much.Good morning all,
Here are some Torque readings during my latest test drive. I apologize if they're not in order. I time and date stamped the images so you know what order the readings were taken.
June 22nd 2019 - Outside temp 90F
Time / EOT / ECT
12:54pm / 86.6 / 91.4
Truck started and Idle
1:07pm / 172.6 / 185
Driving 35mph down a city street almost to freeway entrance.
1:10pm / 180.1 / 197.6
Entered freeway from the onramp while putting the gas pedal to the floor and reaching 70mph. Only on the freeway for about 2 minutes before exiting the freeway and entering the offramp.
1:12pm / 183.3 / 186.8
Entered the frontage road from the freeway offramp and driving about 40mph. Drove another 15 minutes back to the car lot and gauges continue to stay at these temps until parked and shut down.
I brought the coolant pressure device I made but chickened out on temporarily installing it. I had this overwhelming fear that I would do something to cause the truck to overheat or cause some other issue. If I ultimately decide I want the truck, I will give it one more test drive and perform that coolant pressure test.
Let me know your thoughts on these temps. They seem reasonable...but what do I know?