1. The Basics:
* Battery: Is the battery fully charged? Test the voltage with a multimeter. A low voltage reading (below 12.5V) indicates a charging problem or a dead battery. A completely dead battery will show very low or no voltage.
* Battery Connections: Are the battery terminals clean and tight? Corrosion can prevent a good connection. Clean them with a wire brush and baking soda and water solution.
* Main Power Switch (if equipped): Some older cars have a main power cut-off switch. Make sure it's turned on.
2. Ignition System:
* Ignition Switch: Is the ignition switch working correctly? Try turning the key in all positions to ensure it's not faulty.
* Ignition Coil: A faulty ignition coil prevents spark, resulting in no power. This requires testing with a multimeter or a spark tester.
* Distributor (if applicable): Older Corvettes might have a distributor. Check the cap, rotor, and points (if equipped) for wear or damage. A faulty distributor can interrupt the spark to the plugs.
* Spark Plugs and Wires: Inspect the spark plugs for fouling, cracks, or excessive wear. Check the spark plug wires for damage, cracks, or loose connections.
3. Fuel System:
* Fuel Pump: A non-functional fuel pump means no fuel reaches the engine. You may hear the pump prime when you turn the key to the "on" position (listen carefully). If you don't hear it, that's a potential problem. Testing fuel pressure requires a fuel pressure gauge.
* Fuel Filter: A clogged fuel filter restricts fuel flow. Replacing it is relatively inexpensive.
* Fuel Delivery: Is fuel getting to the engine? Try checking the fuel lines for leaks or blockages.
4. Starting System:
* Starter Motor: A faulty starter motor prevents the engine from cranking. This can be tested by having someone turn the key while you listen for the characteristic whirring of the starter. A click may also indicate a low battery or a bad connection.
* Starter Solenoid: The solenoid engages the starter motor. A clicking sound when turning the key often points to a bad solenoid.
5. Electrical System:
* Fuses and Relays: Check the fuse box for blown fuses and inspect relays for damage. Replace any blown fuses with the correct amperage.
* Wiring: Look for any damaged or corroded wiring, especially in areas prone to moisture.
* Alternator: While a faulty alternator won't directly prevent starting, it can quickly drain the battery if it's not charging.
What to Do Next:
1. Start with the basics (battery, connections). These are the easiest and cheapest things to check.
2. Use a multimeter. This tool is essential for testing voltage, current, and continuity in various parts of the electrical system.
3. Consult a repair manual specific to your 1984 Corvette. This will provide diagrams and troubleshooting steps.
4. If you are not comfortable working on your car's electrical system, take it to a qualified mechanic. Improperly diagnosing or repairing electrical issues can cause further damage.
By systematically checking these areas, you should be able to narrow down the cause of the no-power problem in your Corvette. Remember safety first! Disconnect the negative battery terminal before working on any electrical components.
