Here's a general outline. Specific steps may vary slightly depending on the exact engine (1.6L or 2.0L) and trim level. Consult a repair manual specific to your Celica's year and engine for detailed instructions and diagrams. A Chilton's or Haynes manual is a worthwhile investment.
Tools you'll likely need:
* Socket wrench set (metric)
* Ratchet and extensions
* Wrenches (metric)
* Pliers
* Screwdrivers (Phillips and flathead)
* Battery terminal cleaner
* Jack and jack stands (essential for safety!)
* Wheel chocks
* New alternator (ensure it's the correct one for your Celica)
* Wire brush (for cleaning terminals)
* Possibly a pulley removal tool (depending on how stubborn the pulley is)
General Steps:
1. Preparation:
* Disconnect the negative battery terminal.
* Secure the vehicle on jack stands after safely raising it with a jack. Never work under a car supported only by a jack.
* Locate the alternator. It's typically on the front of the engine, often near the bottom.
2. Access the Alternator:
* Depending on the engine, you might need to remove some components to gain better access. This could include things like:
* Air intake components (air filter box, hoses)
* Power steering components (potentially hoses or brackets)
* Various engine covers or shrouds
3. Disconnect Electrical Connections:
* Carefully disconnect the alternator's wiring harness connectors. Take photos or make notes to remember which wire goes where.
* Remove the nut(s) holding the alternator's heavy-gauge power cable(s) to the alternator post(s). Clean these terminals with a wire brush.
4. Remove the Alternator:
* Remove the alternator's mounting bolts. These are usually two or three bolts holding the alternator to the engine block or a bracket. They may be difficult to access.
* The alternator might be somewhat heavy. Carefully lower it out of the engine bay.
5. Installation of the New Alternator:
* Reverse the removal process. Make sure all connections are secure.
* Install the alternator and its mounting bolts. Tighten them to the manufacturer's specified torque (found in your repair manual).
* Reconnect the wiring harness connectors and the power cable(s). Again, make sure all connections are secure and clean.
6. Testing:
* Reconnect the negative battery terminal.
* Start the engine and check the alternator's output voltage using a multimeter. The voltage should be around 13.5-14.5 volts when the engine is running. A low voltage reading indicates a problem. Check your charging system thoroughly (battery, alternator, wiring) if this is the case.
7. Reassembly:
* Reinstall any components you removed earlier to access the alternator.
Important Considerations:
* Pulley: The alternator pulley might be seized. You may need a pulley puller to remove it from the old alternator and carefully install it on the new one.
* Belt Tensioner: The alternator belt will need to be loosened to remove the alternator. Consult your repair manual on how to properly adjust belt tension.
* Repair Manual: This is crucial. A repair manual specific to your 1992 Toyota Celica will provide detailed, illustrated instructions. Improper installation can lead to further damage or injury.
* Safety: Always prioritize safety. Wear safety glasses and gloves. If you're not comfortable performing this repair, take it to a qualified mechanic.
This is a general guide. Always consult a repair manual specific to your vehicle before attempting this repair. Improper installation can lead to serious damage. If you are unsure about any step, it's always best to seek professional help.
