sqidd

lol

erick@leadingedgetuning.com

A thermostat has fixed 2 different trucks that were having cooling issues while towing.

sqidd

Unless the T-stat you were replacing was stuck you're wrong.

mechanicboy

Sounds like the thermostats were defective. Either that or the 20 degrees lower starting temp where just enough to get them over the hill before overheating. As I stated before, a colder thermostat does not increase cooling capacity.

93Cobra#2771

iTrader: (2)

X2 - the cooler tstat is simply giving a bit more headroom before overheating.

I have pretty much the same combo as you, and towed a couple of years ago in same temps (105 degrees). While pulling a 6 percent grade in NC, temps crept up to 228. I never got a warning, but I backed down from 50 mph to 45. Temp started dropping.

My truck is not tuned.

With water cooled turbos and high ambient air, there is a point where heat soak will outrun your cooling system capability. You just have to be smart and slow down a bit.

I've thought about rigging a water spray system to hit the intercooler and radiator when the need arises, but honestly the 105 degrees is an extreme ill rarely ever see.

papa tiger

At 105 ur lucky if U dont overheat let alone the truck. Nuff reason to keek an ice chest close in the cab. Lol

gDMJoe

It gives no "headroom". As long as the cooling fans strategy hasn't also been lowered (meaning: they also come-on at 170°), the cooling system will heat-soak to the temp' near the lower limit of the cooling fans.

Need a bit more cooling capacity? Turn-on the heater and set it to the max'. In the summer it won't be comfortable in the cab', but it does lower the cooling system temp'.
.

mechanicboy

Not at hwy (believe the OP stated 55mph) speeds because the air being pushed through the radiator negates the need for the fans to be on and thus would keep the coolant at a lower temperature if the thermostat opens at a lower temperature. If the fans needed to be corrected for highway driving there wouldn't be a need for a thermostat, you would just adjust the fan strategy, but this is not the case.

In slow speed driving you are correct. Use the heater and not the a/c (just turning off the a/c will help remove heat prior to the radiator and remove load from the engine) is also correct.

NASSTY

Overheating the driver might be a better option than overheating the engine??

papa tiger

Yes ! Cool Cans ! Lol