I have had the timing belt and water pump done in the last year. Sometimes it gets hot, sometimes it doesn’t. Loses some coolant but I cannot find any leaks. Thermostat has been replaced, no help. WHERE CAN I START? 130k miles. Thanks!
You need to measure the ACTUAL temperature of the coolant to determine whether or not the engine is really overheating. If the dashboard gauge or the coolant temp sensor are giving you bad readings you may be worrying over nothing.
Find out the real temperature before you do anything else.
How much coolant does it lose? Has anyone tested for a leaking head gasket?