It is low, add coolant to within about an inch of the cap opening, and top up the overflow tank to at least the minimum mark on it, maybe half way between the minimum and maximum marks.
If you had to add quite a bit, like a half gallon, then leave the radiator cap off and start the car. Keep it running until the engine warms up and the thermostat opens (upper radiator hose will get hot). Then the coolant level may drop in the radiator. Shut the car off and top up the radiator again, check the overflow level, put the cap on. Should be good-air has been bled from the system, level should not change. Monitor the overflow tank level the next few days, to make sure it is not leaking or losing coolant anywhere. You shouldn't need to check the radiator again, just the overflow tank for always being at same level on a cold engine.
Add coolant let it run til the thermostat opens to see where the level is at if you need to add more or not
SOURCE: 91 toyota camry overheating problem
So far you did the right things in the right order. If you have a pressure cap (looks like a radiator cap to the rear side of the engine. Dealer $15) change the pressure cap also and then flush the radiator. A sure sign of blockage is when you open the radiator look around inside the top if you see brown or green kind of gunky stuff. Flush the radiator anyway.
If after the radiator is flushed and you still overheat, the next posibility is the head gasket. But don,t worry yet, follow these steps and observations. (this goes for 93 camry V6 also, I have one)
The temperature guage can tell you what you need to know.
SOURCE: Car over heats
You may have a clogged radiator or you didnt get all the air out when you filled up the coolant
Its also possible the water pump fan blades are corroded away.
If anyone ever used a stop leak this could cause a blockage anywhere
SOURCE: 2003 camry new thermostat new radiator cap pushing coolant to overflow.
thermostat is not opening
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