1. Diagnosis: Isolate the Problem
* Check the Fuse: Start with the easiest fix. Consult your owner's manual to locate the fuse for the blower motor and check if it's blown. Replace it with a fuse of the same amperage if necessary.
* Check the Blower Motor Resistor: This resistor controls the fan speeds. A faulty resistor often leads to only high speed working (or none at all). It's typically located behind the glove box or under the dash, often clipped to the HVAC housing. Accessing it usually involves removing the glove box. Visually inspect it for burnt components or obvious damage. Testing it requires a multimeter, measuring resistance across its terminals according to its wiring diagram. A bad resistor needs replacement.
* Check the Blower Motor Switch: This is the control you use to select fan speeds. A faulty switch can prevent the blower from working at all speeds or certain speeds. Replacement is usually the only solution if faulty.
* Check the Blower Motor: This is the most expensive and time-consuming part to replace. If the fuse, resistor, and switch are all good, the motor itself is likely at fault. Testing it requires disconnecting it and using a multimeter to check voltage and resistance; this might require some electrical knowledge or a repair manual. A bad motor needs replacement.
* Check Wiring and Connections: Inspect all wiring related to the blower motor, resistor, and switch for breaks, loose connections, or corrosion. Repair or replace any damaged wiring.
2. Repair/Replacement (Assuming you've identified the faulty component):
* Blower Motor Resistor Replacement: This is usually the most common culprit. You'll need to access the resistor (often behind the glove box), unplug the connector, and carefully remove and replace it with a new one. Ensure proper alignment during reinstallation.
* Blower Motor Switch Replacement: This usually involves removing the dash components to access it. You'll need to unplug the connector and carefully replace the switch. Again, a repair manual will be helpful.
* Blower Motor Replacement: This is the most complex repair. It typically involves accessing the blower motor from behind the dash or through the engine compartment (depending on the Contour model). You may need to remove parts of the dash or HVAC housing. Disconnecting the wiring and replacing the motor requires careful attention to detail.
Important Considerations:
* Repair Manual: A repair manual specific to your 1998 Ford Contour is highly recommended. It will provide detailed diagrams, instructions, and specifications to guide you through each step.
* Safety: Disconnect the negative battery cable before working on any electrical components. Be cautious when working near air bags or other safety systems.
* Tools: You'll likely need various tools such as screwdrivers (Phillips and flathead), sockets, pliers, a multimeter, and possibly a wiring harness connector removal tool.
* Parts: You can purchase replacement parts from auto parts stores, online retailers, or salvage yards. Always verify part numbers to ensure compatibility.
If you're not comfortable working on car electrical systems, it's best to take your Contour to a qualified mechanic. Improper repairs can lead to further damage or even safety hazards.
