1997 Mercury Grand Marquis Owner Guide 1st Printing - Page 156

Have the exhaust and body ventilation systems checked whenever: u your vehicle is raised for service u the sound of the exhaust system changes u your vehicle has been damaged in a collision Improve your ventilation by keeping all air inlet vents clear of snow, leaves, and other debris. If the engine is idling while you are stopped in an open area for long periods of time, open the windows at least one inch (2.5 cm). Also, the heating or air conditioning system should be set to any function except MAX A/C or AUTO. u If you use the heater, set the fan speed on MEDIUM or HIGH with the function control on any position except OFF and the temperature control at any desired position. speed on MEDIUM or HIGH with the function control on any position except OFF or MAX and the temperature control at any desired position. u If you use the air conditioner, set the fan Pushing Vehicles with automatic transmissions cannot be started by pushing. Follow the directions under If Your Vehicle Needs a Jump-Start. 156