seriously?? 2 thermostats?? - Page 2 - Chevy and GMC Duramax Diesel Forum
06-07.5 LBZ & LLY Duramax Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission Ect

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Old 11-19-2012, 06:09 PM   eBay Motors  #11 (permalink)
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Quote:
Originally Posted by 07.5 LMM View Post
why exactly do they use a double thermostat system? I heard this before but never really figured out what the deal is.

I just kind of went through this as I had a stuck 185 degree thermostat. It was stuck open so the truck wouldn't reach the proper operating temperature. It pretty much stayed in the 170 degree area when it should have been at 181 degrees. The first thermostat keeps the truck operating between 181-185 during normal operation then the second thermostat will open under conditions where additional cooling is needed like increased load or hot ambient temperatures without over cooling.
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Old 11-19-2012, 06:18 PM   eBay Motors  #12 (permalink)
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Cool deal. Thanks for explaining
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Old 11-19-2012, 07:53 PM   eBay Motors  #13 (permalink)
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cause the japanese are still pissed over WW2...
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Old 11-20-2012, 05:11 AM   eBay Motors  #14 (permalink)
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Originally Posted by cessna150 View Post
cause the japanese are still pissed over WW2...
That would make sense if the detroit 6.5 diesels didnt have two thermostats too. Unless you are saying detroit is in japan?
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