Having problems with your 1999 Ford Taurus ?

I have a coolant system that needs to be bled of air. How would I go about doing that?

Posted / edited by AnonymousUser on : 01-03-2021

Answers :

A complete drain and refill of the cooling system at 50,000 miles (80, 000km) and afterwards at least every 30,000 miles (48,000 km) or 3 years will remove the accumulated rust, scale and other deposits. The recommended coolant is a 50/50 mixture of ethylene glycol and water for year-round use. Choose a good quality antifreeze with water pump lubricants, rust inhibitors and other corrosion inhibitors, along with acid neutralizers.
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  1. Raise the vehicle and support it with jackstands. \015\012 \015\012
  2. Remove the splash shield from the front of the front sub frame and body. \015\012

\015\012Before opening the radiator petcock, spray it with some penetrating lubricant.
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  1. Place a suitable container under the petcock. \015\012 \015\012
  2. Remove the reservoir bottle pressure cap. \015\012 \015\012
  3. Attach a length of rubber hose to the draincock. This will help to direct the coolant flow into the drain pan. \015\012 \015\012
  4. Drain the existing coolant by opening the radiator petcock. \015\012 \015\012
  5. Close the petcock and install the splash shield. \015\012 \015\012
  6. Lower the vehicle. \015\012 \015\012
  7. Determine the capacity of the coolant system, then properly refill the cooling system with a 50/50 mixture of fresh coolant and water, as follows: \015\012\015\012
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    1. Fill the reservoir bottle with coolant until it reaches the top of the cold fill mark on the bottle. \015\012 \015\012
    2. Reinstall the bottle pressure cap. \015\012 \015\012
    3. Select the maximum heater temperature and blower motor speed settings. Position the control to discharge air at the A/C vents in the instrument panel. \015\012 \015\012
    4. Start the engine and allow it to idle until hot air is coming from the A/C vents. \015\012

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  8. If the air discharge from the A/C vents remains cool and the temperature gauge does not move, the engine coolant is low in the engine and must be filled. Turn the engine OFF , allow the engine to cool and add coolant through the reservoir bottle as described earlier and replace the cap. \015\012 \015\012
  9. Start the engine and allow it to idle. Hot air should come from the A/C vents. The engine coolant temperature gauge should maintain a stabilized reading within the normal range and the upper radiator hose should feel hot to the touch. \015\012 \015\012
  10. Shut off the engine and allow it to cool. \015\012 \015\012
  11. If available, install a pressure tester and check for leaks. If a pressure tester is not available, run the engine until normal operating temperature is reached (allowing the system to naturally pressurize), then check for leaks. \015\012


\015\012\015\012CAUTION\015\012If you are checking for leaks with the system at normal operating temperature, BE EXTREMELY CAREFUL not to touch any moving or hot engine parts. Once the temperature has been reached, shut the engine OFF, and check for leaks around the hose fittings and connections which were removed earlier.
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  1. Check the level of protection with an antifreeze/coolant hydrometer
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  3. If this is helpful please leave positive feedback.
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  5. Thanks, snugglpants
Idle car with cap off, or overfill cars overflow bottle and drive then check later when cool to see if level is ok
Repair Help & Product Troubleshooting for 1999 Ford Taurus

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