200 engine temp, 2500HD w/ 6.0

Mattt · March 29, 2005

My 01 2500HD, 6.0, CC, 4WD has always ran right below 210F since Ive owned it. Im the second owner. Looks like its around 200F I guess, occasionally 210F.

Recently I thought about changing out the T-stat to a 180F. Well, no one has a 180F that I have found. And, to my surprise the factory one isnt a 195F as I expected it to be. Its supposedly a 186F. I figured it was running 200F since it had a 195F in it. My error.

What temp are others seeing on their similar trucks? Should I not worry about the 200F? Id like to see it a bit lower, but I dont know if its possible.

Ive seen an engine coolant temp study online that seemed to show engine life and performance was optimal at 180-185F.

dewfpo · March 29, 2005

My 8.1 is brand new and runs 205-210F ALL the time. It's designed that way.

DEWFPO

Mattt · March 29, 2005

My 8.1 is brand new and runs 205-210F ALL the time. It's designed that way.

DEWFPO

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Right, but thats an 8.1 in an 05. I think yours is a different animal than mine.

Cool Zr2 · March 29, 2005

Don't mess with the stat, the PCM relies on that motor to be at a certian temp to provide the proper fuel/air mix and timing curves, etc.

Mattt · March 30, 2005

Don't mess with the stat, the PCM relies on that motor to be at a certian temp to provide the proper fuel/air mix and timing curves, etc.

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Right on, Im trying to see what temp that is for others with the same truck?

I wonder if my t-stat is starting to go and thats why Im at 205ish instead of 185ish

04-silver · March 30, 2005

I have the 04 Siverado 6.0 4x4 EC and 4.10's. My temp is always floating around 100 celcius=212 farenheit

John

CHevyHD4x4 · March 30, 2005

my HD runs around 200-210.

tomm · March 30, 2005

my HD runs around 200-210.

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My 04 6.0 2500hd engine temp runs at 210.The auto trans will not shift into overdrive until somewhere around 180.

Scyry · March 30, 2005

Mine has always been right around 200-210...almost never moves...

First time I ever saw it move after warming up was a few months ago when my whole grill got iced over in a storm. Was having to stop ever now and then to scrape the ice of my windshield, the defroster couldn't keep up. There was about 2 inch of ice across the whole grill when I stopped to see why it was heating up, I mean I wouldn't think of a truck getting too hot in -5 F weather.

Needgasmoney · March 31, 2005

My HD temp is always 200 - 205.

MrQuadrasteer · March 31, 2005

Changing a t-stat alone will often not make any difference in running tempature if no other changes are made.

Hook up some electric fans and you can probably get your temps down, but as mentioned, get the cpu recalibrated.

With a 186* stat and my Wester's tune tuned for it... I still run 200* !!! I'll get e-fans soon.

Mattt · March 31, 2005

my HD runs around 200-210.

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My 04 6.0 2500hd engine temp runs at 210.The auto trans will not shift into overdrive until somewhere around 180.

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Its starting to look like everyone 6.0 runs in the 205 temp range. Looks like mine is fine in that case. I was thinking it would run closer to the factory t-stat temp of 186.

What do you mean, ""The auto trans will not shift into overdrive until somewhere around 180.""?

Ive never seen my truck run at 180, yet, my truck shifts into overdrive all the time.

ctfan · March 31, 2005

My 01 6l runs at about 208 209. As for the trannys, the computer is programed not to shift til certain temps to help the tranny warm up and save the tranny. If you start you truck in real cold weather and take of, you will notice that it will take a while to shift from 1 to 2. That is why.

William

dewfpo · March 31, 2005

"What do you mean, ""The auto trans will not shift into overdrive until somewhere around 180.""?

Ive never seen my truck run at 180, yet, my truck shifts into overdrive all the time."

He's talking about engine temp, not tranny temp.

DEWFPO

tomm · March 31, 2005

In the morning I get settled out at about fifty mph and when the engine temp warms to around 180f the trans shifts into overdrive.I use mobil 1 for the engine oil so 210f does not bother me.