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Home >> Ford >> 2002 >> Crown Victoria Base, 4.6 9 >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission - Diagnosis - 4R70W >> Performance Tests >> Stall Speed Test >> Testing Precautions

Testing Precautions

When performing stall speed test, do not hold throttle open longer than 5 seconds. Allow a cooling period of 15 seconds with transmission in Neutral and engine speed at 1000 RPM between each test. If engine speed exceeds maximum limits shown, release accelerator immediately, as this is an indication of clutch or band slippage.