Hi all,
I did a coolant flush on my 2004 Toyota corolla and after the first drain (about 4L pink liquid came out) , I filled the coolant tank with clean water, close the radiator cap and let the car idle for 20 minutes. I forgot to put the heater on full blast. I drained the liquid (still pink but about 2.5l) and refill again with clean water. This time I put the heater on full blast and drove the car for about 20 minutes. Car blows cold air. I let the engine cool down and open the radiator cap and let the car idle for few minutes. slight improvement as air is not very cold but not very hot. What should I do now?
Assuming you don't have another problem in that 20-year-old thing you probably still have air trapped in the cooling system. There are plenty of youtube videos showing how to bleed cooling systems, for example:
https://www.youtube.com/watch?v=xWVIkqLZ4QU
https://www.youtube.com/watch?v=DOE55feY3aM
https://www.youtube.com/watch?v=lXl--PknJbs
@chucktobias Thanks. I was able to bleed the air and add about 3L of coolant. Now it blows hot air-no overheating indicated by the engine. I added coolant through radiator cap opening, the reservoir tank was showing no sign of coolant inside. Then I add about 500ml of coolant into the reservoir tank (coolant level is in between LOW & FILL). Still when radiator cap is open, I can not see any coolant inside radiator. I may need to add more coolant. will monitor...
Regarding coolant flush when I have oil issue..I am in the process of doing service. Next in line to change oil, oil filter, spark plugs, PCV valve & rocker cover gasket...Hopefully will solve the oil burning issue..