Bleeding air from cooling system

Tiny
JINXY5150
  • MEMBER
  • 1996 MERCURY SABLE
  • 3.0L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 75,460 MILES
I am trying to refill cooling system but because of the air pockets I cannot. Help
Friday, December 21st, 2018 AT 6:09 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
Hi and thanks for using 2CarPros.

Here are the directions for bleeding the system from Alldata. Note that when the engine is running with the heater on, continue to keep the system full until you have heat from the heater, the temp gauge stabilizes, and the system remains full.

This can be a pain, but that's how it's done.

______________________________

BLEEDING
Bleed cooling system as follows:

1. Select maximum heater temperature and blower motor speed settings. Position control to discharge air at A/C vents in instrument panel.

2. Start engine and allow to idle. While engine is idling, feel for hot air at A/C vents.

3. CAUTION: If air discharge remains cool and engine coolant temperature gauge does not move, engine coolant level is low in engine and must be filled. Stop engine, allow to cool and fill cooling system.

Start engine and allow to idle until normal operating temperature is reached. Hot air should discharge from A/C vents. The engine coolant temperature gauge should maintain a stabilized reading to within the NORMAL range and the upper radiator hose should feel hot to the touch.

4. Shut engine off and allow to cool.

5. Check engine for coolant leaks.

6. NOTE: When engine coolant level indicator flashes, approximately 0.946-1.416 liter (1-1.5 qts.) of coolant mixture can be added to the radiator coolant recovery reservoir after a proper engine coolant system refill.

Check engine coolant level in radiator coolant recovery reservoir and fill as necessary.

Also, here is a link that discusses flushing the system. Toward the end, it explains how to refill.

https://www.2carpros.com/articles/coolant-flush-and-refill-all-cars

I hope something here helps. Let me know if you have other questions.

Take care,
Joe
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Friday, December 21st, 2018 AT 8:46 PM

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