This process will vary slightly depending on the exact V6 engine (3.9L or 3.5L) in your Dakota. You'll need to consult a repair manual specific to your vehicle's year, make, model, and engine for detailed instructions and torque specifications. This response provides a general overview and may not cover every specific step.
General Steps (Consult your repair manual for specifics):
1. Safety First: Disconnect the negative battery terminal. Wear safety glasses and gloves. Work in a well-ventilated area.
2. Drain the Oil: Completely drain the engine oil.
3. Remove the Oil Pan: This often requires removing various components, potentially including:
* Front engine cover (timing cover) or part of it: Provides access to the oil pump. This might involve removing belts, pulleys, and possibly even the crankshaft pulley.
* Various other components: Depending on your specific engine configuration, other components may need to be removed to gain access to the oil pump. This could include sensors, brackets, etc.
4. Access the Oil Pump: Once the oil pan is removed, the oil pump should be visible. You might need to remove some bolts holding it in place.
5. Remove the Oil Pump: Carefully remove the oil pump, paying attention to the position of any components attached to it, such as the pickup tube. Take pictures as you disassemble to aid reassembly.
6. Clean the Oil Pan and Pump: Thoroughly clean the oil pan and the area where the oil pump sits. Remove any debris that could interfere with the new pump's operation.
7. Install the New Oil Pump: Carefully install the new oil pump, ensuring it's seated correctly and all bolts are tightened to the manufacturer's specified torque. Again, refer to your repair manual.
8. Reinstall the Oil Pan: Carefully reinstall the oil pan, ensuring the gasket is properly seated.
9. Reassemble Components: Reinstall all the components you removed earlier, including the front engine cover or timing cover. Double-check everything is properly aligned and tightened to the correct torque specifications.
10. Add New Oil and Filter: Add new engine oil and a new oil filter. Check the oil level and top off as needed.
11. Run the Engine: Start the engine and check for leaks. Let the engine run for a few minutes to allow the oil to circulate, then check the oil level again.
Critical Considerations:
* Repair Manual: A factory service manual specific to your 1999 Dodge Dakota V6 is absolutely essential. It provides detailed instructions, torque specifications, and diagrams.
* Tools: You'll need a comprehensive set of tools, including sockets, wrenches, a torque wrench, and possibly special tools to remove specific components.
* Gaskets and Seals: Replace all gaskets and seals associated with the oil pan and oil pump. Reusing old gaskets can lead to leaks.
* Timing Chain/Belt: Depending on the access required to get to the oil pump, you might need to work with the timing chain or belt. This is an extremely critical part of the engine, and incorrectly reinstalling it can lead to severe engine damage.
This is a complex procedure with potential for serious engine damage if done incorrectly. If you lack the necessary experience and tools, it's strongly recommended to have a qualified mechanic perform this repair. The cost of a professional repair will be far less than the cost of repairing or replacing a damaged engine.
