1. The Obvious Checks (Always start here):
* Battery: Check the battery voltage. A weak or dead battery won't provide enough power to the ignition system. Test the battery voltage with a multimeter. It should be around 12.6 volts when fully charged. Check the battery cables for corrosion and secure connections.
* Fuses and Relays: Inspect all fuses related to the ignition system (check your owner's manual for locations and ratings). Also, check the ignition relay – it's a common culprit. A bad relay can be easily replaced, usually found in the under-hood fuse box.
* Ignition Switch: Try jiggling the ignition key while turning it to the "on" position. A faulty ignition switch can interrupt the electrical circuit. This is less likely but worth a quick test.
2. Ignition System Components:
* Coil: The ignition coil is responsible for boosting the voltage to create the spark. A visual inspection might reveal cracks or obvious damage. Testing with a multimeter is recommended to confirm its functionality. A bad coil won't produce the necessary high voltage.
* Distributor (if equipped): If your Ram has a distributor (less common in '96, but possible), check the following:
* Rotor: Make sure the rotor isn't cracked or damaged.
* Cap: Inspect the distributor cap for cracks, corrosion, or burned contacts. Clean the contacts if necessary.
* Pick-up Coil (or Crankshaft Position Sensor): This sensor detects the position of the crankshaft and tells the ignition system when to fire. A faulty sensor will prevent sparking. This requires more advanced testing.
* Crank Sensor (if equipped - more likely in '96): Similar to the pick-up coil above, but typically a separate sensor. Its job is to tell the computer the engine is cranking. A faulty sensor will prevent the computer from sending the signal to fire the coil.
* Ignition Module (control module): This component controls the firing of the coil. A faulty module can prevent sparking. This typically requires specialized testing tools.
* Wires (Ignition and Plug Wires): Inspect the wires for cracks, damage, or loose connections. Check the resistance with an ohmmeter if you suspect a problem. A broken wire will prevent current from reaching the coil or spark plugs.
3. Computer System (PCM):
* PCM (Powertrain Control Module): The PCM controls many aspects of the engine, including ignition timing. A faulty PCM is less common but possible. Diagnosing a PCM problem usually requires a scan tool to read fault codes.
4. Spark Plugs & Wires:
* Spark Plugs: Even though you have no spark, check the plugs and wires. If the plugs are heavily fouled, they could inhibit spark. However, if there is no spark at the coil, the plugs are not the primary issue.
* Plug Wires: Check for cracked or damaged insulation that could cause shorts or intermittent sparking.
Troubleshooting Steps:
1. Start with the simplest checks: Battery, fuses, and relays.
2. Visual inspection: Look for obvious damage to components.
3. Use a multimeter: Test the battery, coil, and wires.
4. Consider professional help: If you're not comfortable working on the ignition system, take it to a mechanic. Incorrect diagnosis and repair could damage other components.
5. Obtain a diagnostic scan: A scan tool can read fault codes from the PCM, giving you clues to the problem. Auto parts stores often offer free code reading.
Important Safety Note: Work on the ignition system only when the vehicle's battery is disconnected. High voltage can cause serious injury. If you're not comfortable working with automotive electrical systems, seek professional help.
