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Home >> Ford >> 2000 >> Excursion 7.3 F, RWD >> Repair and Diagnosis (Single Page) >> Engine Performance >> Testing & Diagnosis >> Engine Controls - Self-Diagnostics - EEC-V - CNG, Flex-Fuel & Gasoline >> System Tests (Evaporative Emissions) >> Test B: DTC P0455: Major Leak Or No Flow Detected Or DTC P1443: Very Small Or No Purge Flow Detected In System >> Diagnostic Aids

Diagnostic Aids

Perform this test only when directed by QUICK TEST. DTC P0455 will be set in PCM when it senses a -7 in. H2 O (-1.74 kPa) drop over 30 seconds. DTC P1443 will be set in PCM when it senses a -7 in. H2 O (-1.74 kPa) drop over 30 seconds with more than .02 lb./min. vapor flow.

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