1. Identify the Problem:
* No spray at all: This points to a pump issue, a clogged line, or a faulty fuse.
* Weak spray: Likely a clogged line or a failing pump.
* Spray from only one nozzle: A clogged nozzle or a problem with the line to that specific nozzle.
* Leaking line: A crack or hole in the washer tubing.
2. Check the Easy Stuff First:
* Fluid Level: Make sure you have enough washer fluid in the reservoir.
* Fuse: Check your owner's manual for the windshield washer fuse location and check if it's blown. Replace it if necessary.
* Pump: Listen carefully when you activate the washer switch. You should hear the pump motor running. If you don't hear it, the pump may be faulty.
* Nozzles: Check if the nozzles are clogged. Use a needle or small pin to clear any debris.
3. Locating and Repairing the Line:
This is the trickiest part and will require some patience and possibly some automotive experience.
* Visual Inspection: Start by carefully inspecting the visible portions of the washer lines under the hood and along the firewall. Look for cracks, disconnections, or kinks.
* Tracing the Lines: Follow the lines from the reservoir to the nozzles. The lines are usually made of plastic tubing.
* Common Failure Points: Look closely where the lines connect to the nozzles, the reservoir, and the pump. These are common points of failure due to vibration and age.
* Repairing a Leak: If you find a small leak, you might be able to repair it temporarily with some automotive-grade sealant or tape designed for flexible tubing. A permanent fix is to replace the section of tubing.
* Replacing a Section of Line: If a section is damaged beyond repair, you'll need to replace it. You can usually purchase replacement tubing at an auto parts store. Measure the length of the damaged section carefully before going to the store. You'll likely need to disconnect the line from its fittings. Be gentle to avoid breaking the plastic connectors. Use new hose clamps to secure the new tubing.
* Accessing Hidden Lines: Some parts of the washer system are likely hidden behind panels or under the dash. You may need to remove some interior trim pieces to access these areas. Consult a repair manual for your specific Navigator model to find out how to safely remove these parts without causing damage.
4. Replacing the Pump:
If the pump is faulty, replacing it will require more work. Again, a repair manual will be invaluable in showing you the pump's location and how to remove and replace it. This usually involves disconnecting the electrical connector, the fluid lines, and removing some mounting fasteners.
Important Notes:
* Repair Manual: Investing in a repair manual specific to your 2001 Lincoln Navigator is highly recommended. It will provide diagrams, instructions, and torque specifications, making the repair process much easier and less prone to errors.
* Safety First: Always disconnect the negative battery terminal before working on any electrical components.
* Professional Help: If you're not comfortable working on your vehicle, take it to a qualified mechanic.
This is a general guide. The specific location and accessibility of the washer lines and pump will vary slightly depending on the trim level and options on your 2001 Navigator. Always refer to a repair manual for your specific model for detailed instructions.
