Here's a general outline. Specifics may vary slightly depending on your exact van's configuration (engine type, etc.). Consult a repair manual specific to your 1999 Dodge Ram 1500 van for detailed instructions and diagrams. A Haynes or Chilton manual is a good investment.
Removal:
1. Drain the coolant: Locate the drain petcock (valve) at the bottom of the radiator. Place a large drain pan underneath and carefully open the petcock to drain the coolant. This can be messy, so be prepared.
2. Disconnect the upper and lower radiator hoses: Use a hose clamp pliers to loosen the clamps on the hoses connected to the radiator. Carefully remove the hoses. Have rags ready to soak up any remaining coolant.
3. Disconnect the transmission cooler lines (if applicable): If your radiator has transmission cooler lines integrated, disconnect them carefully. They may be clamped or use quick-disconnect fittings. Be aware that transmission fluid is also messy and needs to be contained.
4. Disconnect the radiator fan: Disconnect the electrical connector to the radiator fan motor. Depending on your model, you might also need to remove the fan shroud and fan assembly to access the radiator better.
5. Remove the radiator support: Depending on your van's design, you might need to remove the radiator support assembly to access the radiator. This typically involves removing several bolts or screws.
6. Remove the radiator: Carefully lift the radiator out of the engine compartment. It can be heavy, so get help if needed.
Installation:
1. Install the radiator: Carefully position the new radiator in the engine compartment.
2. Reattach the radiator support (if removed): Secure the radiator support back into place.
3. Reconnect the radiator fan: Reattach the electrical connector to the radiator fan motor.
4. Reconnect the transmission cooler lines (if applicable): Reconnect the transmission cooler lines securely.
5. Reconnect the upper and lower radiator hoses: Attach the upper and lower radiator hoses and tighten the hose clamps securely.
6. Fill the radiator with coolant: Use the correct type and concentration of coolant for your engine. Refer to your owner's manual for the recommended type. Consult the manual for proper mixture of coolant and distilled water. Fill the radiator until it's full, then add coolant to the overflow reservoir.
7. Bleed the cooling system: Start the engine and let it run for a few minutes. Check for leaks around the hoses and connections. Add more coolant as needed to the overflow reservoir. Continue running the engine until the thermostat opens, allowing air to escape from the system.
Important Considerations:
* Repair Manual: A repair manual is highly recommended for detailed instructions and diagrams specific to your vehicle. Pictures are invaluable.
* Coolant Type: Use the correct type of coolant specified in your owner's manual. Mixing different types of coolant can cause problems.
* Bleeding the System: Properly bleeding the cooling system is crucial to prevent overheating.
* Professional Help: If you're not comfortable working on your vehicle, take it to a qualified mechanic. Radiator replacement is not a simple job and improper installation can lead to significant damage.
This is a general overview. Always refer to a repair manual specific to your 1999 Dodge Ram 1500 van before attempting this repair. Remember safety first!
