Simple Checks (Do these first):
* Battery: Test the battery voltage. A weak or dead battery is the most common cause of a no-start condition. Have it load tested if you suspect a problem.
* Fuses and Relays: Check all fuses, particularly those related to the ignition system and fuel pump. Inspect relays for damage or corrosion. A visual inspection is often enough.
* Starter Motor: Listen carefully when you turn the key. Do you hear a click, a whirring sound, or nothing at all? A weak or failing starter will produce a click, while a completely dead one will be silent. A whirring sound might suggest a seized engine.
* Fuel: Is there gas in the tank? Sometimes the obvious is overlooked. If there's fuel, check if the fuel pump is working (you might hear a brief hum when you turn the key to the "on" position).
* Ignition Switch: Make sure the ignition switch is functioning correctly. A faulty switch won't send power to the necessary components.
More Involved Issues:
* Fuel Delivery Problems:
* Fuel Pump: As mentioned above, a faulty fuel pump won't deliver fuel to the engine.
* Fuel Filter: A clogged fuel filter restricts fuel flow.
* Fuel Injectors: Clogged or malfunctioning fuel injectors prevent fuel from reaching the combustion chamber.
* Ignition System Problems:
* Ignition Coil: A bad coil won't provide the necessary high voltage to the spark plugs.
* Spark Plugs and Wires: Worn, fouled, or damaged spark plugs or wires prevent proper ignition.
* Distributor (if applicable): Older engines might have a distributor; problems with the distributor cap, rotor, or ignition module can prevent the spark. (Less likely on a 1995, but possible).
* Crankshaft Position Sensor (CKP): This sensor tells the computer the engine's rotational position; a faulty one will prevent the engine from starting.
* Computer/Sensors:
* Engine Control Unit (ECU): A faulty ECU can cause a wide range of problems, including a no-start condition. This is usually diagnosed with a scan tool.
* Other Sensors: Many sensors (like the mass airflow sensor, oxygen sensor, etc.) feed data to the ECU. A faulty sensor can lead to an incorrect fuel/air mixture, preventing the engine from running.
* Timing Belt: A broken timing belt will render the engine unable to run and could cause significant internal damage. (This is a catastrophic failure, and you will need a mechanic).
Troubleshooting Steps:
1. Start with the simple checks. These are the easiest and cheapest to diagnose.
2. Check for error codes: If you have a code reader (OBD-II scanner), you can scan for diagnostic trouble codes (DTCs) which will point to potential problems.
3. Visual Inspection: Look for any obvious signs of damage, loose connections, or corrosion.
4. Seek Professional Help: If you're not comfortable working on cars, or if you've checked the simple things and are still stumped, it's best to take your car to a qualified mechanic.
Remember to always disconnect the negative battery terminal before performing any work on the electrical system. Safety first!
