Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET1985ASTRO VAN PASSENGER, 2.5 E, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMFUEL PUMP - ELECTRICTESTINGFLOW TEST
1985 Chevrolet Astro Van Passenger, 2.5 E, Automatic
Flow Test
1985 Chevrolet Astro Van Passenger, 2.5 E, AutomaticSECTION Flow Test
- Disconnect EFI fuel feed line from throttle body. Route line to a 1 quart, calibrated container. Apply battery voltage to terminal "G" of assembly line communications link (ALCL). See Fig 1 . Fuel pump should supply volume of 1/2 pint or more, within 15 seconds.
- If fuel supply is okay, pump is operating properly. If fuel supply is not okay, check for restriction in supply line. Repair or replace line if necessary. If there are no restrictions, perform PRESSURE TEST in this article.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.