Thermostat temps - The 1947 - Present Chevrolet & GMC Truck Message Board Network

CSchmidt · 12-17-2023, 04:08 PM

Long story short I live in Arizona and recently changed my thermostat from a 160 to a 180 high flow speedway degree thermostat. I burp the coolant and at idle it's between 180 to 190 degrees. When I drive and stopped at a red light it will jump to 210. I'm thinking I still need to purge the system or is the new 180 thermostat the problem? Or a faulty temperature sending unit? I run dual radiator fans that come on at 180. Before with the 160 degree thermostat it would get up to temperature kinda quick but didn't have a issue at a red light. Any information will be GREATLY appreciated.

Thanks Chris

12-17-2023, 04:08 PM	#1
CSchmidt Registered User Join Date: Jun 2019 Location: Phoenix Arizona Posts: 22	Thermostat temps Long story short I live in Arizona and recently changed my thermostat from a 160 to a 180 high flow speedway degree thermostat. I burp the coolant and at idle it's between 180 to 190 degrees. When I drive and stopped at a red light it will jump to 210. I'm thinking I still need to purge the system or is the new 180 thermostat the problem? Or a faulty temperature sending unit? I run dual radiator fans that come on at 180. Before with the 160 degree thermostat it would get up to temperature kinda quick but didn't have a issue at a red light. Any information will be GREATLY appreciated. Thanks Chris Last edited by CSchmidt; 12-17-2023 at 04:18 PM.

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