Temps after a new head gasket?
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Joined: Jan 2011
Posts: 16,322
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From: Savannah Georgia
180 stat. Re-check coolant level and belt route. Thermostat should be last thing worked on in cooling system, the tiny hoes in top leg can easily become clogged with junk knocked loose.
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Three Wheeling
Joined: Mar 2012
Posts: 94
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From: Olathe KS
Thermostat is brand new(had it changed when they changed the head gasket) System flushed and refilled with NON-Dexcool global coolant. Electric fan comes on around the 200f range. System air-bled , hoses are firm and hold pressure.
What worries me is that my temps are probably spiking around 225 once i shut the engine off. After spending 2500 on a head gasket job, i'm overly paranoid.
What worries me is that my temps are probably spiking around 225 once i shut the engine off. After spending 2500 on a head gasket job, i'm overly paranoid.
Super Moderator
Joined: Jan 2011
Posts: 16,322
Likes: 88
From: Savannah Georgia
A moment please. Temps are at somewhere before you shut down, then increase to 225 once rotation of the engine is reduced to 0.0000 rpm, and water flow is reduced to 0.0000 gallons per minute. It would seem normal to increase in temp when forced water flow and forced air flow is cut off. Then cool back down. I also "discovered" that exhaust manifolds have similar properties and can leave a mark. The D2 is supposed to switch on that electric fan if:
after 10 seconds after key off, the intake air temp sesnor says it is 140F AND coolant temp is 230F.
After 10 minutes, the fan cuts off to conserve battery, or earlier if engine coolant returns to 212F.
So if this is after you turn off the truck, it is expected by physics and Rover is not worried about it unless coolant temp is 230F and IAT is high. So you could have a cold day, wind chill, and an overheated engine and Rover won't turn that helper fan on.
after 10 seconds after key off, the intake air temp sesnor says it is 140F AND coolant temp is 230F.
After 10 minutes, the fan cuts off to conserve battery, or earlier if engine coolant returns to 212F.
So if this is after you turn off the truck, it is expected by physics and Rover is not worried about it unless coolant temp is 230F and IAT is high. So you could have a cold day, wind chill, and an overheated engine and Rover won't turn that helper fan on.
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Three Wheeling
Joined: Mar 2012
Posts: 94
Likes: 0
From: Olathe KS
Bled the system again using the elevated expansion tank method. After i started nosing around under the hood,Drew (the formerLR2001Silver) and i discovered a massive oil leak at the front of the valley pan seal. So back to the shop it went. They assured me they're going to reflush the system and check the thermostat while they redo the head gaskets and valley pan gasket So we'll see what happens.
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