Cooling System Bleed Procedure

[lexus400]

Does anyone have the procedure for an ES ? I drained my coolant and now have a sloshing noise in the dash and very little heat. Must be an airlock in or around the heater core.

thanks,

Bob

[CUMan]

This is the procedure from my Haynes manual (for a refill after a drain):

1. Close and tighten the radiator drain. Install and tighten the block drain plug.

2. Place the heater temperature control in the maximum heat position.

3. Slowly add new coolant (a 50/50 mixture of water and antifreeze) to the

radiator until it's full. Add coolant to the reservoir up to the lower mark.

4. Leave the radiator cap off and run the engine in a well-ventilated area until

the thermostat opens (coolant will begin flowing through the radiator and

the upper radiator hose will become hot.)

5. Turn the engine off and let it cool. Add more coolant mixture to bring the level

back up to the lip on the radiator filler neck.

6. Squeeze the upper radiator hose to expel air, then add more coolant mixture

if necessary. Replace the radiator cap.

7. Start the engine, allow it to reach normal operating temperature and check for

leaks.

The same procedure is used for both the 3MZ-FE and the 1MZ-FE engines.

[ArmyofOne]

This is the procedure from my Haynes manual (for a refill after a drain):

1.  Close and tighten the radiator drain.  Install and tighten the block drain plug.

2.  Place the heater temperature control in the maximum heat position.

3.  Slowly add new coolant (a 50/50 mixture of water and antifreeze) to the

     radiator until it's full.  Add coolant to the reservoir up to the lower mark.

4.  Leave the radiator cap off and run the engine in a well-ventilated area until      

     the thermostat opens (coolant will begin flowing through the radiator and        

     the upper radiator hose will become hot.)

5.  Turn the engine off and let it cool.  Add more coolant mixture to bring the level

     back up to the lip on the radiator filler neck.

6.  Squeeze the upper radiator hose to expel air, then add more coolant mixture

     if necessary.  Replace the radiator cap.

7.  Start the engine, allow it to reach normal operating temperature and check for

     leaks.

The same procedure is used for both the 3MZ-FE and the 1MZ-FE engines.

←

is that what causes that? my 90 ES250 does that all the time...i need to do this then? only thing is, my heater works great!

[lexus400]

thank you very much !