1998 Oldsmobile Achieva Owner's Manual - Page 121

Have you recently changed brands of fuel? Oil Pressure WarningLight This lighttells you if there could be a problem with your engine oil pressure. If so, be sure to fuel your vehicle with quality fuel (see "Fuel" in the Index).Poor fuel qualitywill cause your engine not torun as efficiently as designed. You may notice thisas stalling after start-up, stalling when you put the vehicle intogear, misfiring, hesitationon acceleration or stumbling on acceleration. (These is conditions may go away once the engine warmed up.) This will be detected by the system and cause the light to turn on. If you experience one or more of these conditions, change the fuelbrand you use. It will require at least one full tank of the proper fuel to the light off. turn If none of the above steps havemade the lightturn off, have your retailer or qualified service center check the vehicle. Your retailer has the proper test equipment and diagnostic tools to fix any mechanical or electrical problems that may have developed. This light can come on briefly, which is normal and doesn't show a problem: a As a bulb check, light comes on when you turn the your key to RUN and goes off when the engine is started. If it doesn't, be sure tohave it fixed so it will be there to warn you. a For the four cylinder engine, when idling at a stop sign, the light may blink on and then off. In addition, if you make a hard stop, the light may come on for a moment. But, when this lightcomes on and stays on, it means oil isn't going through your engine properly. You could be low on oil, oryou might have some other oil problem. 2-57