1. Don't Panic (But Do Take It Seriously): While a check engine light can be unnerving, it doesn't automatically mean your engine is about to seize. However, it's a signal that something needs attention.
2. Get the Diagnostic Trouble Code (DTC): This is the crucial first step. Your 1990 Oldsmobile 88 Royale likely doesn't have an OBD-II system (that came later), meaning you'll need a different approach:
* Find a Mechanic with Older Car Experience: Many modern mechanics may not be equipped to diagnose older vehicles. Find one specializing in older cars or those familiar with pre-OBD-II diagnostics. They will have the tools (likely a code reader specific to that era) needed to retrieve the trouble codes.
* Look for flashing lights: A *flashing* check engine light often indicates a serious problem requiring immediate attention. Drive carefully and get it checked ASAP.
3. Interpret the Code (With Help): The DTC will be a number or a series of numbers. This code is a key to understanding what's causing the problem. You'll likely need a repair manual specific to your 1990 Oldsmobile 88 Royale to decipher the code. These manuals can be found online or at auto parts stores.
4. Address the Underlying Problem: Once you have the code and understand the problem, you can decide how to proceed:
* Simple Fixes: Some issues might be relatively minor and easily fixed (e.g., loose gas cap, faulty sensor). With some mechanical aptitude and the right parts, you might be able to handle this yourself.
* Professional Repair: More complex problems, such as issues with the ignition system, fuel injection, or catalytic converter, will require a mechanic's expertise.
5. Don't Just Clear the Code: Clearing the check engine light without fixing the underlying problem is a bad idea. The light will likely come back on, and the problem could worsen.
Important Considerations for a 1990 Oldsmobile:
* Age and Wear: Parts are likely to be worn out or nearing the end of their lifespan. The diagnostic process might involve some detective work by the mechanic.
* Parts Availability: Sourcing replacement parts for a car this old might take some effort.
In short, getting the diagnostic trouble code is paramount. Don't delay getting it checked, as driving with a persistent problem could lead to further damage and costly repairs.
