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Help! C6 Overheats only in 95+ weather, when A/C is on

V

vintage

Guest
I've had my 2006 C6 coupe since 2006. Lived for several years in TX and LA, never had any overheating problems. Moved to MT. When weather is very hot 90-100F and I have the A/C on, the temp gauge creeps up toward the 250 alarm point when I am in stop and go traffic. Not a problem at highway speed. If I shut the A/C off in stop and go traffic, temp returns to normal. Have had the cooling system flushed and checked at my local dealer. They said the thermostat was fine. Any ideas? Again, only a problem in hot weather, with A/C on, and in stop and go traffic.
 

jhecox

Well-known member
Joined
May 11, 2006
Messages
1,178
Location
Auburn Hills-MI
Corvette
2016 Corvette Racing Yellow, Z51, OURS C7
You had the system flushed, but have you checked to see if there is debris in the fins blocking air going through?
 

newsie23

New member
Joined
Jan 20, 2009
Messages
2
Location
Port Severn, ON
Overheats

I have used TufOil, in a high miler, and had to (mostly) block off the radiator, at 0' F, to get heat from the heater! I assume the friction was dramatically reduced. I assume, also, using it - a vehicle would fail the required 'warm up' test, for emissions. I use it in my DD for improved fuel economy.
 

jrs 94

New member
Joined
Mar 22, 2009
Messages
1
Location
lockport il
Corvette
2008 JSB Coupe.
Make sure your fan is running correctly. If not check the connector located halfway up the radiator. Those like to melt.
 

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