Tools and Materials:
* New heater hoses: Get the correct size and length. It's best to take the old hoses to an auto parts store for accurate matching.
* Channel-lock pliers or hose clamps: To remove and install the clamps. New clamps are recommended.
* Screwdrivers (Phillips and/or flathead): May be needed to access hose clamps or other components.
* Sockets and wrenches: Potentially needed for disconnecting any other parts that might be in the way. Check your specific model.
* Bucket or pan: To catch coolant.
* Shop rags or paper towels: To clean up spills.
* Gloves: To protect your hands.
* Funnel: To refill the cooling system.
* 50/50 mix of coolant and distilled water: To refill the cooling system.
Procedure:
1. Safety First: Allow the engine to cool completely before starting any work. The coolant is hot and can cause serious burns. Consult your owner's manual for any additional safety warnings.
2. Drain the Cooling System: Locate the drain petcock at the bottom of the radiator and carefully open it to drain the coolant into your bucket. This will make the job significantly easier and cleaner.
3. Locate the Hose: Identify the heater hose that needs replacing. They typically run from the engine to the firewall (where the heater core is located) and back again.
4. Remove the Hose Clamps: Use your channel-lock pliers to loosen and remove the clamps securing the hose to the engine and heater core connections. You may need to carefully pry the clamps away from the hose.
5. Remove the Old Hose: Gently pull the old hose off the connections. Be prepared for some coolant residue to leak out.
6. Install the New Hose: Carefully slide the new hose onto the connections. Ensure the hose fits snugly.
7. Install New Clamps: Install new hose clamps securely on both ends of the new hose. Tighten them enough to provide a good seal but avoid over-tightening.
8. Refill the Cooling System: Carefully add the 50/50 mixture of coolant and distilled water to the radiator until it's full. Check your owner's manual for the proper coolant type.
9. Bleed the Air Out of the System: This is crucial to prevent overheating. There are different methods for bleeding the cooling system, depending on your specific Mustang model. You may need to run the engine and carefully monitor the coolant level to ensure air pockets are purged. Consult your repair manual or an online resource specific to your Mustang's cooling system.
10. Check for Leaks: After refilling and bleeding the system, start the engine and carefully inspect all connections for leaks. Allow the engine to run for a few minutes to warm up, but not to operating temperature.
11. Top Off Coolant (if necessary): Once the engine has cooled down, check the coolant level and top it off as needed.
Important Notes:
* Consult a Repair Manual: A shop manual specific to your 1965 Ford Mustang is highly recommended. These manuals provide detailed diagrams and instructions tailored to your specific model.
* Photography: Take pictures before you start disconnecting anything. This will be invaluable for remembering how everything went back together.
* Patience: Replacing a heater hose might seem simple, but take your time and work carefully. Rushing can lead to mistakes.
If you're not comfortable performing this repair yourself, it's always best to take your Mustang to a qualified mechanic. They have the experience and tools to ensure the job is done correctly.
