However, if you're determined to do it yourself, here's a general outline. This is not a complete, step-by-step guide, as variations exist depending on the specific alternator model. You'll need a repair manual specific to your 1985 Toyota Celica GT for precise instructions and diagrams.
Tools You'll Likely Need:
* Socket wrench set (metric)
* Ratchet and extensions
* Wrenches (metric)
* Screwdrivers (Phillips and flathead)
* Battery terminal cleaner
* Possibly a pulley puller (depending on the alternator)
* Jack and jack stands (essential for safety)
* Safety glasses and gloves
General Steps (Consult your repair manual for specifics):
1. Disconnect the Battery: This is CRUCIAL to prevent electrical shocks and short circuits. Disconnect the negative (-) terminal first, then the positive (+).
2. Access the Alternator: This usually involves removing some components to gain access. Your repair manual will show you exactly which parts need to be removed (e.g., belts, brackets, etc.). Use jack stands to safely support the vehicle.
3. Remove the Old Alternator: This typically involves removing the mounting bolts and disconnecting the electrical connectors (battery cable and alternator wiring). Note the position and orientation of the alternator before removing it to ensure correct reinstallation. You might need to loosen or remove the serpentine belt.
4. Install the New Alternator: Carefully align the new alternator with its mounting points and install the mounting bolts. Tighten them to the manufacturer's specifications (found in your repair manual).
5. Reconnect the Electrical Connections: Connect the battery cable and the alternator wiring to the correct terminals. Ensure they are securely fastened.
6. Reinstall Belts and Other Components: Replace any belts, brackets, or other components you removed to access the alternator. Make sure the belt is properly tensioned. Refer to your repair manual for correct tension specifications.
7. Reconnect the Battery: Connect the positive (+) terminal first, then the negative (-) terminal.
8. Test the Alternator: Start the engine and check the voltage with a multimeter. The voltage should be around 13.5-14.5 volts when the engine is running. If the voltage is low or not charging, there might be a problem with the alternator, wiring, or the battery.
Important Considerations:
* Repair Manual: A repair manual specific to your 1985 Toyota Celica GT is essential. It will provide detailed diagrams and instructions.
* Alternator Specifications: Ensure the replacement alternator is the correct one for your vehicle. The wrong alternator may not fit or function properly.
* Belt Tension: Proper belt tension is crucial. A too-loose or too-tight belt can damage the alternator or other components.
* Safety: Always disconnect the battery before working on the electrical system. Use jack stands for safety when working under the car.
This is a general overview. The specific procedure will vary depending on your vehicle's configuration and the alternator model. Always consult your repair manual for accurate and detailed instructions. If you are unsure about any step, it's best to seek professional help.
