Replacing the Starter: This is not a beginner's job and requires some mechanical aptitude. If you're not comfortable working on vehicles, it's best to take it to a mechanic. However, if you're determined to do it yourself, here's a general outline. Always disconnect the negative battery cable before starting any work on the electrical system.
1. Gather Tools: You'll need a socket wrench set (metric), possibly various extensions and a universal joint to reach the starter bolts, a ratchet, a torque wrench, wire brushes or a scraper, possibly a pry bar, and a jack and jack stands (crucial for safety). You might also want penetrating oil (like PB Blaster).
2. Access the Starter: This is often the hardest part. You'll likely need to:
* Jack up the Bronco and secure it on jack stands: Safety first! Never work under a vehicle supported only by a jack.
* Remove parts that obstruct access: This could include things like the air intake, exhaust components, or even the passenger-side front tire and wheel well liner (depending on the specific engine and Bronco configuration). Refer to a repair manual specific to your Bronco's engine (e.g., 302 V8, 351 V8) for accurate details.
* Possibly remove the engine's lower shroud if there is one.
3. Disconnect the Battery Cables: This is absolutely crucial. Disconnect the negative (-) cable first, then the positive (+).
4. Disconnect the Starter Wires: The starter will have at least two large cables connected to it – one power cable from the battery and one smaller cable for the solenoid. These are usually held on with bolts. Use the appropriate sized socket and carefully remove them. Take pictures or make notes to remember which wire goes where.
5. Remove the Starter Bolts: These bolts typically are at the top and bottom or sometimes on the sides of the starter. Apply penetrating oil if the bolts are stuck. Use your socket set and ratchet to carefully remove the bolts. You may need extensions and a universal joint to get to them.
6. Remove the Starter: Once the bolts are out, carefully remove the starter motor from its mounting position. It might be a bit snug, and a gentle pry bar may be needed (use it carefully to avoid damaging anything).
7. Install the New Starter: This is the reverse of the removal process. Make sure the new starter is aligned correctly before tightening the bolts.
8. Reconnect the Wires: Attach the power and solenoid cables securely, making sure they are correctly positioned.
9. Reassemble Everything: Carefully put all the parts you removed back in place.
10. Lower the Bronco: Once everything is reassembled, carefully lower the Bronco from the jack stands.
11. Reconnect the Battery Cables: Connect the positive (+) cable first, then the negative (-) cable.
12. Test the Starter: Try starting your Bronco. If it doesn't work, double-check all your connections.
Important Notes:
* Repair Manual: A repair manual specific to your 1989 Ford Bronco is invaluable. It will show you exactly where the starter is located, what needs to be removed for access, torque specifications for the bolts, and wiring diagrams.
* Torque Specifications: Use a torque wrench to tighten the bolts to the manufacturer's recommended torque specification. Over-tightening can damage the starter or its mounting.
* Safety: Remember safety first! Use jack stands, work in a well-lit area, and wear appropriate safety glasses.
This is a general guide. The exact procedure may vary slightly depending on your Bronco's specific engine and options. Consult a repair manual for precise instructions and diagrams. If you are not comfortable performing this repair, taking your Bronco to a qualified mechanic is the safest and most reliable option.
