Heater Hose: Service and Repair
HEATER HOSERemoval
WARNING: Never remove the pressure relief cap under any conditions while the engine is operating. Failure to follow these instructions could result in damage to the cooling system or engine and/or personal injury. To avoid having scalding hot coolant or steam blow out of the cooling system or reservoir, use extreme care when removing the pressure relief cap from a hot cooling system or reservoir. Wait until the engine has cooled, then wrap a thick cloth around the pressure relief cap and turn it slowly until pressure begins to release. Step back while the pressure is released from the cooling system. When all pressure has been released, remove the pressure cap (with a cloth).
CAUTION:
- The coolant must be recovered in a suitable, clean container for reuse. If the coolant is contaminated it must be recycled or disposed of correctly and replaced.
- Some vehicle cooling systems are filled with Motorcraft Premium Engine Coolant VC-4-A (in Oregon VC-5, in Canada CXC-10) or equivalent meeting Ford specification ESE-M97B44-A (green color). Others are filled with Motorcraft Premium Gold Engine Coolant VC-7-A or equivalent meeting Ford specification WSS-M97B51-A1 (yellow color). Always fill the cooling system with the same coolant that is present in the system. Do not mix coolant types.
NOTE: Less than 80% of coolant capacity can be recovered with the engine in the vehicle. Dirty, rusty or contaminated coolant requires the system flush and replacement.
1. Release the pressure in the cooling system by slowly turning the pressure relief cap one-half turn counterclockwise. When the pressure is released, remove the pressure relief cap.
2. Place a suitable container below the radiator draincock and partially drain the radiator.
- Close the radiator draincock when finished.
3. Remove the screws and the RH cowl vent screen.
- Position the weatherstrip aside.
4. Disconnect the vacuum hoses and the wire harness connector from the evaporative emissions canister purge valve.
5. Remove the RH cowl extension.
1 Remove the screws.
2 Remove the nuts.
3 Remove the extension.
6. Remove the nut and remove the evaporative emissions purge valve.
7. Remove the heater hoses from the heater core.
8. Remove the heater hoses from the engine.
Installation
CAUTION: Engine coolant provides freeze protection, boil protection, cooling efficiency and corrosion protection to the engine and cooling components. In order to obtain these protections, the engine coolant must be maintained at the correct concentration and fluid level in the degas bottle.
When adding engine coolant, use a 50/50 mixture of clean distilled water and engine coolant.
To maintain the integrity of the coolant and the cooling system:
- Add Motorcraft Engine Coolant VC-4-A (in Oregon VC-5, in Canada CXC-10) or equivalent meeting Ford specification ESE-M97B44-A (green color), or Motorcraft Premium Gold Engine Coolant VC-7-A or equivalent meeting Ford specification WSS-M97B51-A1 (yellow color). Always fill the cooling system with the same type of coolant that was drained from the system. Do not mix coolant types.
- Do not add orange-colored Motorcraft Specialty Orange Engine Coolant VC-2 or equivalent meeting Ford specification WSS-M97B44-D. Mixing coolants may degrade the coolant's corrosion protection.
- Do not add alcohol, methanol or brine, or any engine coolants mixed with alcohol or methanol antifreeze. These can cause engine damage from overheating or freezing.
- Do not mix with recycled coolant unless it meets the requirements of Ford specification ESE-M976B44-A or WSS-M97B51-A1. Not all coolant recycling processes meet these Ford specifications. Use of such coolants may harm the engine and cooling system components.
1. Connect the heater hoses at the engine.
- Clean and lubricate the coolant hoses with plain water only if needed.
2. Connect the heater hoses at the heater core.
- Clean and lubricate the coolant hoses with plain water only if needed.
3. Install the nut and the evaporative emissions purge valve.
4. Install the RH cowl extension.
1 Install the extension.
2 Install the screws.
3 Install the nuts.
5. Connect the evaporative emissions purge valve electrical connector, vacuum connector and fuel lines.
6. Install the RH cowl vent screen and the screws.
7. Add the correct engine coolant mixture to the degas bottle until the coolant level is between the COOLANT LEVEL FILL marks and replace the pressure cap.
8. Select the maximum heater temperature and blower motor speed settings. Set the climate control assembly to PANEL.
9. Run the engine until it reaches operating temperature and the thermostat is open. Select the maximum heat temperature and verify that the cooling system/heater core is bled correctly.
10. CAUTION: If air discharge remains cool and the engine coolant temperature gauge does not move, the engine coolant level is low in the engine and must be filled. Stop the engine, allow it to cool and fill the cooling system.
Add the correct engine coolant mixture to the degas bottle until the coolant level is between the COOLANT LEVEL FILL marks.
11. Repeat the two previous steps until the engine coolant mixture is between the COOLANT LEVEL FILL marks on the degas bottle. Turn off the engine and allow it to cool.