Corvette C6 over heating
Thread Starter
Cruising
Joined: Nov 2016
Posts: 14
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Corvette C6 over heating
Fans a running even after shut off guessing that’s normal, just changed the thermostat so that’s not the issue main issue I’m having is the coolant won’t leave the reservoir I tried opening the cap and Revving the engine to 3k RPM...but nothing could it be my water pump ?
Thread Starter
Cruising
Joined: Nov 2016
Posts: 14
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no I didn’t even remove it it seemed like that was the issue before I changed the thermostat I just figured since the temp was going so high and coolant wasn’t moving I needed to change thermostat now I’m thinking it’s the pump since it doesn’t want to go down from the reservoir
Thread Starter
Cruising
Joined: Nov 2016
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the temp goes well over 220 I don’t think so, only because the coolant is just sitting the reservoir and it just keeps saying to add coolant I’m just thinking it’s the pump
Race Director
Joined: Oct 2012
Posts: 17,322
Likes: 6,504
From: Melbourne, FL
220 isn't all that hot. That said, if no coolant is moving, it's either the water pump, or a total blockage of the system. There's an easy but dumb way to check what's happening. Let the coolant get really hot, then open the overflow cap. If steam comes out and it's really hot and you get burned, everything is fine. If it opens easily, no steam comes out, and the coolant is more or less ambient temperature, you're not moving any coolant.
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Thread Starter
Cruising
Joined: Nov 2016
Posts: 14
Likes: 0
220 isn't all that hot. That said, if no coolant is moving, it's either the water pump, or a total blockage of the system. There's an easy but dumb way to check what's happening. Let the coolant get really hot, then open the overflow cap. If steam comes out and it's really hot and you get burned, everything is fine. If it opens easily, no steam comes out, and the coolant is more or less ambient temperature, you're not moving any coolant.
Thread Starter
Cruising
Joined: Nov 2016
Posts: 14
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well some did pour out when I was changing there for I bought more coolant to replace but reservoir is full and it doesn’t seem like it’s going in to the motor and through the water pump it just sits
Melting Slicks
Joined: Oct 2015
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From: Mead Wash
2020 C6 of the Year Finalist - Modified
C6 of Year Finalist (appearance mods) 2019
Open coolant cap, turn inside temperature dials all the way up to 90 with fan on high. Run car until it gets 220 or so. This should remove any air in the system. Report results. Run for around ten minutes.
Last edited by 2008 Corvette; Jun 17, 2020 at 07:25 PM. Reason: Error spelling
Safety Car
Joined: Nov 2007
Posts: 4,433
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From: Bay Area CA
Just to add: Do this when engine is cold and keep revs around 1700 rpm for about 5 minutes watching your temperature gauge and coolant level. This will help "burp" trapped air in the coolant system.
Last edited by Mike's LS3; Jun 19, 2020 at 10:23 AM.