1995 Pontiac Firebird Owner's Manual - Page 122

before any problem is apparent, which may prevent more serious damage to your vehicle. system is also The designed to assist your service technician correctly in diagnosing any malfunction. The SERVICE ENGINE SOON light should come on, as a check to show you is working, whenthe ignition it is on and the engine is not running. light will also This come on during a malfunction in or two ways: one Light on steady - - indicates a system malfunction has been detected. Drive vehicle to the dealer the for service at your first opportunity. Light Flashing - - indicates a misfire has been detected which may damage emission control the system. The damage may reduced'by lowering the be vehicle speed, reducing amount of cargo being the hauled or trailered, avoiding hard acceleration, by or avoiding steep uphill grades. these actions are If effective, the light will stop flashing and remain on steady. Drive the vehicle to a dealer service. If for the light continues to flash, stop the vehicle. for Wait a steady light to come on, then drive the vehicle to the nearest dealer for service. These following conditions also may cause the SERVICE ENGINESOON light tocome on. Low Fuel/Out of Fuel - - As the vehicle starts to run out of fuel the SERVICE ENGINE SOON light may come on as a result an engine misfire. Filling your gasoline of tank should correct this condition. Make sure toinstall the gas cap fully. will require a driving trips to It few turn the light off. Poor Quality Fuel - - Be sureto fuel your vehicle with quality fuel.Your engine may not run efficiently on poor fuel. Poor fuel may cause stalling, hesitationor misfire. These conditions may go away when theengine is warmed-up. However, poor quality may cause the fuel SERVICE ENGINE SOON light to come on. Have a dealer check the vehicle.If no problems are found, you may want to change to another brand of fuel. Driving Through Standing Water -- Driving your vehicle through puddles of deep standing -w.a&rmay result in a temporary misfire condition. condition This will usually correct itself- shortly after electrical the system dries out.It will require a few driving trips to turn the light off. 2-75