Unfortunately, checking and clearing codes on a 1992 Geo Metro (which uses a simpler OBD system than later cars) is not as straightforward as plugging in a modern OBD-II scanner. There isn't a standardized connector like OBD-II. The method depends on the specific year and model variations within the 1992 Geo Metro range.
Here's how you might approach it:
1. Finding the Diagnostic Connector:
The diagnostic connector's location varies slightly depending on the exact model and trim. It's likely a small connector, possibly under the dashboard, or in the engine bay near the fuse box. Consult your owner's manual (if you have it) or a repair manual specific to your 1992 Geo Metro with the 1.0L Suzuki engine. This is the *most crucial* step.
2. Checking Codes (if connector found):
Even with the connector, you won't be able to use a standard OBD-II scanner. You'll likely need:
* A multimeter: You might be able to check codes by shorting specific pins on the diagnostic connector and reading the resulting flashes from the CEL. This is very model-specific and requires detailed instructions from a repair manual or a Geo/Suzuki-specific troubleshooting guide (often found online through forums dedicated to these vehicles). The flashing pattern of the CEL itself might provide clues.
* A specialized code reader: Some older code readers are available that work with the Geo/Suzuki system, but these can be hard to find.
3. Clearing Codes (if possible):
Clearing the codes is usually done by disconnecting the battery for a short period (about 30 minutes). This resets the computer's memory. However, this will *not* fix the underlying problem causing the flashing CEL. The CEL will likely return if the problem remains.
Important Considerations:
* Safety First: A constantly flashing CEL indicates a severe problem. Driving the car could cause irreversible damage. Have it towed to a mechanic.
* Repair Manual: The single most valuable tool you can have is a repair manual specific to your 1992 Geo Metro with the 1.0L Suzuki engine. This will contain the wiring diagrams, diagnostic procedures, and code interpretations. You can often find these online (through sites like eBay or Amazon) or at auto parts stores.
* Professional Mechanic: Due to the age and the lack of a standard OBD-II port, your best course of action is to take the car to a qualified mechanic experienced with older vehicles. They have the tools and expertise to diagnose the problem accurately and safely.
What the flashing CEL Likely Means:
A constantly flashing CEL almost always indicates a serious misfire condition, potentially causing damage to your catalytic converter. Other possibilities include issues with the ignition system, fuel system, or sensors. A mechanic can pinpoint the issue.
Don't attempt advanced troubleshooting without proper knowledge and tools. Safety should be your top priority.
