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posted these questions in C4 section by mistake, 03 has been running up to 260, does come down to 240 when clear traffic, is that too high, fluids seem topped off ok, also , this is a convertible and yellow button you release deck with only works intermittently, most of time I have to pull release cable!!! pain in the butt, any ideas, or anybody else had this problem? thank you for any help, Tom
From: In a parallel universe. Currently own 2014 Stingray Coupe.
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260*, even 240*, is too high. Your car should run around 190-200* on the road and maybe 220-225 in stop and go traffic.
Check to see if you have a lot if debris in the radiator area and if not, you will have to check other possibilities like stuck thermostat, bad water pump, collapsed hose, clogged radiator, etc.