1998 Oldsmobile 88 Owner's Manual - Page 120

Engine Coolant Temperature Gage This gage shows the engine coolant temperature. Malfunction Indicator Lamp (Check Engine Light) Your vehicle is equipped with a computer which monitors operationof the fuel, ignition and emission control systems. CHECK 0 I1 This system is called OBD (On-Board Diagnostics-Second Generation) and intended to is are assure that emissions at acceptablelevels for the If the gage pointer moves the red warning zone on into life of the vehicle, helping to produce a cleaner is your instrument cluster, your engine too hot! It means environment. The CHECK ENGINE light comes on to A your engine coolant has overheated. warning chime is may also sound. If you have been operating your vehicle indicate that there a problem and service is required. Malfunctions often will be indicated the system by off under normal driving conditions, you should pullthe before any problemis apparent. This may prevent more turn off the engine as soon road, stop your vehicle and serious damage to your vehicle. This system is also as possible. designed to assist your service technician correctly in In the section "Problemson the Road," this manual diagnosing any malfunction. explains what to See "Engine Overheating"in do. the Index. 2-61