2003 4runner v8 Running very warm

wapomax
Sun, 28 Jun 2020 06:38:09 +0000
Maintenance/Repairs

My car is running very warm and I have been told that it is probably either a bad head gasket or a warped/cracked cylinder head. How do I find out which one it is if either? I have never let it overheat, but it did lose a lot of coolant once when the top radiator hose came off, and it almost overheated. Now it just bounces back and forth between running at normal operating temperature and a much higher temperature, but not quite overheating. How do I diagnose it?

8 posts - 5 participants