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Home >> Chevrolet >> 1987 >> Astro Van M L4-151 2.5L >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Testing and Inspection >> Scan Tool Testing and Procedures >> Positions >> PPSW - Pump Pressure Switch
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PPSW - Pump Pressure Switch


Indicates fuel pump feed circuit voltage. Should indicate battery voltage when engine is cranking or running.

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