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Home >> Ford >> 1998 >> Econoline Custom >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 13 (Heater System) >> Testing >> Function Selector Switch
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Function Selector Switch

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Place function selector switch in specified position. Using a vacuum gauge, check for presence or absence of vacuum as specified. See Figure. If test results are not as specified, check for kinked or broken vacuum lines. If vacuum lines are okay, replace function selector valve.

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