Therefore, "making it work" depends on what's not working. Troubleshooting needs to be targeted. Here's a breakdown:
1. Identify the Problem:
* Engine won't start/run poorly: This could point to a problem with the PCM itself, the various sensors it relies on (like the crankshaft position sensor, oxygen sensor, etc.), the wiring harness connecting everything, or even something as simple as a dead battery or a blown fuse.
* Specific warning lights: If any warning lights are illuminated on the dashboard, this will give you a clue to the potential problem area.
* No power to accessories: This could indicate a problem with the main power supply, the alternator, or even the PCM itself.
2. Basic Troubleshooting Steps:
* Check the obvious: Battery voltage, fuses, and the alternator's charging system. A weak battery or faulty charging system can cause all sorts of problems.
* Inspect the wiring: Look for any obvious damage to the wiring harness, corrosion, or loose connections. Pay particular attention to the connections near the PCM itself.
* Check sensors: The PCM relies on various sensors for input. A faulty sensor will lead to incorrect engine operation. This requires specialized tools to test sensor output.
* Test the PCM: Testing the PCM itself requires specialized tools and knowledge of automotive electronics. It's typically best to have a professional mechanic perform this test, as improperly testing or replacing the PCM can cause further damage.
* Obtain a Service Manual: A service manual specific to your 1989 Dodge Ram Van's engine and model is invaluable. It contains wiring diagrams, diagnostic procedures, and specifications for various components. You can find these online or through automotive parts stores.
3. Professional Help:
Unless you have experience working on automotive electrical systems, it's best to seek professional help from a qualified mechanic experienced in older vehicles. Working with the PCM requires careful attention to avoid damage. Improperly working on the system could damage the PCM or other components, leading to greater expense. A mechanic will have the necessary tools and expertise to diagnose the problem and make the repairs effectively.
In short, there's no single answer to "making the 1989 Dodge Ram Van computer work." The solution depends entirely on what's malfunctioning. Start with the basics (battery, fuses, wiring), and if the problem persists, get professional help.
