It starts out blowing hot then gets cold. Head gaskets were done recently. New thermostat installed. Heater core flushed. Radiator only 6 months old.
Temperature gauge is also erratic.
Intermittently goes to hot then comes down to normal range. I cannot figure this out and neither can my mechanic. I need your help desperately. We think your problem is a low coolant level. If not, fill it to the top.