1998 Oldsmobile 88 Owner's Manual - Page 122

If the LightIs On Steady You may be able to correct the emission system malfunction by considering following: the Did you recently put into your vehicle? fuel If so, reinstall the fuel cap, making sure to fully install the cap.The diagnostic system can determine ifthe fuel cap has been off or improperly installed.A loose or left missing fuel cap will allowfuel to evaporate into the atmosphere. A few drivingtrips with the cap properly installed should turn light off. the Did youjust drive through adeep puddle of water? If so, your electrical system may be wet. condition The will usually be corrected when electrical system the turn dries out. A few driving trips should the light off. Have you recently changed brands fuel? of If so, be sure tofuel your vehicle with quality fuel (see "Fuel" in the Index). Poorfuel quality will cause your You engine not to run as efficiently as designed. may 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 engine is warmed up.) the This will be detected by the system and cause light the to turn on. If you experienceone or moreof these conditions, change the fuel brand you use.It will require at least one full tank of the properfuel to turn the light off. If none of the above steps have made light turnoff, the have your retailer or qualified service center check the vehicle. Your retailer has the proper test equipment and diagnostic tools to any mechanical or electrical fix problems that may have developed. 2-63