Tools You'll Likely Need:
* Socket wrench set: Metric, likely including a 13mm, 15mm, and possibly larger sockets.
* Ratchet: A good quality ratchet will make the job easier.
* Extension(s): To reach tight areas.
* Wrench(es): Possibly an open-end wrench or combination wrench for bolt access.
* Torque wrench: Essential to properly tighten bolts and avoid damage.
* Jack and jack stands: Crucial for safety. Never work under a vehicle supported only by a jack.
* Wheel chocks: To secure the vehicle.
* Battery terminal cleaner: Good practice.
* Wire brush: To clean starter terminals.
* Penetrating oil (like PB Blaster): To loosen rusted bolts. Apply this several hours before starting the job.
* Gloves and safety glasses: Always protect yourself.
* New starter: Make sure you get the correct replacement starter for your specific engine.
Procedure (General Steps – Consult your repair manual for specifics):
1. Disconnect the battery: Disconnect the negative (-) terminal first, then the positive (+) terminal. This prevents accidental shorts and electrical shock.
2. Prepare the vehicle: Secure the vehicle on level ground using jack stands after safely raising it with a jack. Engage the parking brake and use wheel chocks.
3. Access the starter: This is the most variable step. On a FWD S-10 Blazer, the starter is typically located on the engine block, near the bellhousing (where the transmission connects to the engine). You may need to remove some components for better access. This *could* involve:
* Removing the air intake system (possibly).
* Removing parts of the lower engine shroud (possibly).
* Removing the battery and battery tray (possibly, depending on placement).
* Removing some engine components that obstruct access. Your repair manual will clarify this.
4. Disconnect the starter:
* Battery cable(s): Disconnect the positive (+) and negative (-) cables from the starter. Note the positions of the cables for correct reconnection.
* Starter wires: Disconnect any other wires connected to the starter.
* Bolts: Carefully remove the bolts securing the starter to the engine block. These are often tough to remove, so patience and penetrating oil are key.
5. Remove the starter: Once the bolts are out, carefully remove the starter. It may be heavy and awkward.
6. Install the new starter: Carefully install the new starter, making sure it's properly aligned.
7. Reconnect everything: Reconnect the battery cables, starter wires, and bolts. Tighten the bolts to the manufacturer's specified torque.
8. Reconnect the battery: Connect the positive (+) terminal, then the negative (-) terminal.
9. Test: Start the vehicle to ensure the new starter is working correctly.
Important Considerations:
* Safety First: Always prioritize safety. Never work under a vehicle supported only by a jack.
* Repair Manual: A repair manual specific to your vehicle is essential. Generic instructions can't account for all variations.
* Torque Specifications: Use a torque wrench to tighten bolts to the correct specification. Over-tightening can strip threads or damage components.
* Photography: Take pictures as you disassemble components to help you remember how to reassemble everything correctly.
This is a general guide. Consult your repair manual for precise instructions and torque specifications specific to your 1991 Chevy S-10 Blazer FWD. If you're not comfortable performing this repair yourself, it's best to take it to a qualified mechanic.
