Before you begin:
* Let the engine cool completely. Working on a hot cooling system is extremely dangerous.
* Gather your supplies: You'll need a coolant mixture (usually 50/50 antifreeze and distilled water), a funnel, and possibly a pressure tester (recommended but not always necessary). Have rags handy for spills.
Bleeding Procedure:
1. Locate the coolant reservoir: This is usually a translucent plastic tank. Check the coolant level.
2. Open the radiator cap: Carefully remove the radiator cap *only after the engine is completely cool*.
3. Locate the bleed valve(s): This is the crucial part. The 1995 Explorer might have a bleed valve on the engine block itself (often near the thermostat housing) or on the upper radiator hose. It might even have multiple points. Your owner's manual is vital here. Some Explorers may not have a dedicated bleed valve; in this case, you rely primarily on the reservoir.
4. Fill the cooling system: Add coolant mixture to the radiator until it's almost full. Then, add coolant to the overflow reservoir until it reaches the "cold" fill line.
5. Start the engine and let it run: Start the engine and let it run *idling only*, with the radiator cap and any bleed valves open. Monitor the coolant level in the reservoir. As air is expelled, add more coolant to maintain the level.
6. Close the bleed valve(s): Once a consistent stream of coolant flows from the bleed valve(s), and no more air bubbles are visible, close the valves tightly.
7. Continue running the engine: Let the engine run for several minutes to allow the thermostat to open and ensure proper coolant circulation. Watch the temperature gauge carefully.
8. Check for leaks: After the engine has run for a while, turn it off and let it cool completely. Inspect all hoses and connections for any leaks. Add coolant to the reservoir if necessary, bringing it to the "cold" fill line.
9. Reinstall the radiator cap: Once the engine is cool, carefully reinstall the radiator cap.
Troubleshooting:
* If the engine overheats: Stop immediately and let the engine cool. There might be a problem beyond air in the system (like a faulty thermostat, water pump, or head gasket).
* Persistent air pockets: If you're still having trouble, consider using a pressure tester to force coolant through the system. This can help dislodge stubborn air bubbles.
Important Considerations:
* Owner's Manual: The most reliable information will be found in your 1995 Ford Explorer's owner's manual.
* Professional Help: If you're uncomfortable performing this procedure yourself, take your Explorer to a qualified mechanic. Improper bleeding can lead to engine damage.
Remember safety first! Working with coolant can be hazardous. Always wear appropriate safety glasses and gloves. If you're unsure about any step, seek professional assistance.
