Tools You'll Likely Need:
* Repair Manual: Absolutely essential for specific torque specifications and detailed instructions.
* Socket set (metric): Various sizes will be needed.
* Wrenches (metric): Both open-end and possibly box-end.
* Screwdrivers (Phillips and possibly flathead):
* Pliers: Possibly needle-nose.
* Torque wrench: Crucial for proper tightening to prevent damage.
* Rags or shop towels: To keep things clean.
* New IMRC valve: Ensure you get the correct part for your engine.
* Possibly a vacuum gauge: To check vacuum after installation.
General Steps (This is not exhaustive and may vary depending on the engine):
1. Disconnect the Battery: This is the FIRST step to prevent accidental shorts or damage to the vehicle's electrical system.
2. Access the IMRC Valve: This usually involves removing various components to gain access to the intake manifold. This may include:
* Removing the air intake system (air filter housing, air intake tube).
* Possibly disconnecting various hoses and electrical connectors.
* Removing parts of the upper intake manifold (this is often the most challenging part and will require careful attention). The exact components will depend on your engine type.
3. Remove the IMRC Valve: Once you have access to the valve, carefully disconnect any wiring harnesses or vacuum lines connected to it. There will likely be bolts securing the IMRC valve to the intake manifold. Remove these bolts carefully, noting their position and order.
4. Install the New IMRC Valve: Carefully install the new IMRC valve, ensuring it's seated correctly. Tighten the bolts to the manufacturer's specified torque (found in your repair manual). Reconnect any wiring harnesses and vacuum lines.
5. Reassemble: Carefully reassemble all components you removed, ensuring everything is properly connected and seated.
6. Reconnect the Battery: Reconnect the battery.
7. Test: Start the engine and listen for any unusual noises. Check for any vacuum leaks. A vacuum gauge can help confirm proper operation. A professional diagnostic scan might be advisable after installation to rule out any related trouble codes.
Important Considerations:
* Intake Manifold Gaskets: If you remove parts of the intake manifold, you'll likely need new gaskets to ensure a proper seal.
* Bolts: Be careful not to strip any bolts during removal or installation. Use the correct size and type of socket/wrench.
* Vacuum Leaks: Properly sealing all vacuum lines is crucial for the engine to run correctly.
* Professional Help: If you're not comfortable with this type of repair, it's best to take your vehicle to a qualified mechanic. Improper installation can lead to serious engine damage.
This is a simplified overview. Refer to a detailed repair manual specific to your 1999 Ford Taurus's engine for precise instructions, diagrams, and torque specifications. Improper repair can lead to engine damage. If you are unsure about any step, seek professional help.
