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New temps with grey thermostat.

Old May 30, 2019 | 12:05 PM
  #11  
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Originally Posted by Best4x4
It circulates all the time, but if you turn on the blower it will act like a mini radiator being cooled by air. However I’ve personally seen it work for a few minutes, then the temps can rise again.
So the old adage of turning on the heat to rid of heater core air bubbles doesn't apply to D2s, yeah?
 
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Old May 30, 2019 | 12:08 PM
  #12  
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Nope, I just turn the heater on to see if it’s warm. Besides that, the coolant is always flowing thru the core (unless it’s clogged up).
 
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Old May 31, 2019 | 02:09 AM
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Originally Posted by Brandon318
I thought that the heater core on D2s circulated coolant whether heat is selected or not. Which, if true, means this wouldn’t help unfortunately :/
Yes it does.

Your temps drop.
 
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Old May 31, 2019 | 10:09 AM
  #14  
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One other point as I only just confirmed this, check your fan shroud and the hose under the expansion bottle. When I did my suspension I noticed the two lower clips were not engaged so my shroud was not really sealed to the rad, sorted that out, now I am running 5 degrees cooler.

I know it does not make much sense but it may have been delaying lock up of the fan clutch, it is possible the hose to the expansion tank was kinked as well. I am getting 183 at around 30 + miles per hour, and have seen as low as 176 for a about a minute as the clutch really kicks in after sitting a stop sign then getting up to 50 mph quickly

I was running a solid 188 before
 
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