Instead of resetting it, you need to diagnose the problem:
1. Get the Diagnostic Trouble Codes (DTCs): A 1996 Ford van likely uses an OBD-I system, which is older than OBD-II. This means you'll need a code reader specifically designed for OBD-I. Auto parts stores often have loaner tools or can read the codes for you. The codes will provide clues to the source of the problem.
2. Use a code reader designed for OBD-I: You can't use a standard OBD-II scanner on a 1996 vehicle. Make sure you get the right tool for the job.
3. Repair the Problem: Once you know the code(s), research the likely causes. You can consult a repair manual specific to your van's model (like a Haynes or Chilton manual) or use online resources. Fixing the problem is crucial.
4. After Repair, Clear the Code: *After* you've fixed the issue, you can clear the code. On some OBD-I systems, this might involve disconnecting the negative battery terminal for a few minutes (at least 30-60 minutes, even overnight is sometimes recommended). But some OBD-I systems require a specific procedure using the code reader to clear the codes.
Important Considerations:
* Safety: If the problem is severe (like a serious emission issue or a problem with your transmission), driving the van could be dangerous. It's better to have it towed to a mechanic if you're unsure.
* Professional Help: If you're not comfortable diagnosing and repairing the problem yourself, take it to a qualified mechanic. This will save you time, money (in the long run), and potential frustration. Improper repairs can worsen the problem.
Simply resetting the light without fixing the root cause is a temporary solution at best and could mask a serious issue. Find out what's wrong and fix it – that's the only reliable way to deal with a check engine light.