Driver Controls and Instruments Engine Oil Pressure Gauge ther damage. Do not operate the engine until the cause has been determined and corrected. The oil pressure gauge (see Fig. 3.18 ) should read as shown in Table 3.2 . Voltmeter The voltmeter (see Fig. 3.19 ) indicates the vehicle charging system voltage when the engine is running and the battery voltage when the engine is stopped. By monitoring the voltmeter, the driver can be aware of po- tential charging system problems and have them fixed before the batteries discharge enough to create starting difficulties. 10/01/98 f601440a Fig.
3.18, Engine Oil Pressure Gauge CAUTION A sudden decrease or absence of oil pressure may indicate mechanical failure. Bring the vehicle to a safe stop and investigate the cause to prevent fur- 10/01/98 f601439a Fig. 3.19, Voltmeter 3.14