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Generator No-Load Test

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2004 Mercury Marauder, 2004 Mercury Grand Marquis, 2004 Ford Crown Victoria, 2003 Mercury Marauder, and 2003 Mercury Grand Marquis. However, it is still accessible from the selected car via links, so may be relevant.

Connect voltmeter positive lead to generator B+ terminal and negative lead to ground. Start and run engine at 2000 RPM with all accessories off. Read voltmeter when voltage stabilizes. Voltage should be 13-15 volts. With engine running, turn A/C (if equipped) and headlights on, and turn blower motor to high speed. Increase engine speed to 2000 RPM. Voltage should increase a minimum of .5 volt more than base voltage.

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