1997 Buick Riviera Owner's Manual - Page 138

If the LightIs Flashing The following may prevent more serious damage to your vehicle: 0 Reducing vehicle speed. Avoiding hard accelerations. Avoiding steep uphill grades. If you are towing a trailer, reduce the amountof cargo being hauledas soon asit is possible. If the light stops flashing and remains on steady, "If see the Light Is On Steady"following. If the light continues toflash, when it is safe to do so, stop the vehicle. Find a safe place to park your vehicle. Turn the key off, wait at least10 seconds and restart the see engine. If the light remains on steady, "If the Light Is On Steady" following.If the light is still flashing, follow the previous steps, and drive vehicle to your the dealer or qualified service center service. for If the LightIs On Steady You may be able to correct the emission system malfunction by considering the following: Did youjust drive through a deep puddle water? of If so, your electrical system may be wet. condition The will usually be corrected when the electrical system off. dries out. A few driving trips should turn the light Are you low on fuel? As your engine starts to run of fuel, your engine may out of not run as efficiently as designed since small amounts air are sucked into fuel line causing a misfire. The the system can detect this. Adding should correct this fuel condition. Make sure to install the fuel cap properly.It will take afew driving tripsto turn the light off. Have you recently changed brands fuel? of If so, be sure to fuel your vehicle with quality fuel (see fuel "Fuel" in the Index). Poor quality will cause your engine not to run as efficiently as designed. may You notice this as stalling after start-up, stalling when you put the vehicle into gear, misfiring, hesitation on acceleration or stumbling on acceleration. (These conditions may go away once the engine is warmed up.) This will be detected by the system and cause the light to turn on. If you experience one or moreof these conditions, change the fuel brand you use. It will require at least full tank of the properfuel to turn the light off. If none of the above steps have made light turn off, the have your dealeror qualified service center check the vehicle. Your dealer has the proper test equipment and diagnostic tools to any mechanical or electrical fix problems that may have developed. 2-77