Cooling temp and oil,transmission

Asked by Joe May 22, 2023 at 07:52 PM about the 1999 Chevrolet Corvette Coupe RWD

Question type: General

1999 corvette
glass top coupe.
New radiator and
fans run but it
started running at
220/225 degrees
coolant. Oil
218/220.
Transmission
218/220. Should I
be worried?

4 Answers

307,265

Yes. Way too hot for your year of vehicle. You have a definite cooling problem, make absolutely sure you don’t have an air pocket in the cooling system. Some things to check, radiator too small or not built right, cooling fans running the wrong direction, air flow problem through the radiator. Some suggestions, install a separate transmission oil cooler unit, totally bypassing the radiator, same with the engine oil, switch to a air cooled unit.

155,265

Does it heat up when you're driving or when you're idling. If driving it's a coolant circulation problem such as a bad water pump or possibly a stuck closed thermostat. If it's when you're idling it's an airflow problem. Air conditioning condenser clogged with dirt, leaves, etc. Missing fan shroud or air baffles. Electric or clutch fan not working properly. A worn timing chain can make your engine run hot as can a knock sensor problem. If the engine has a valve tap the knock sensor can pick it up and the ignition timing will be severely retarded. This will cause the engine to run hot as well as lack power and possibly cause the transmission to shift late too. Hope that helps! Jim

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