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 MANUALSFORD1991CAB & CHASSIS 5.8 H, STANDARDREPAIR AND DIAGNOSISELECTRICALSTARTERSTARTER - EXCEPT 7.3LON-VEHICLE TESTINGLOAD TEST
1991 Ford Cab & Chassis 5.8 H, Standard
Load Test
1991 Ford Cab & Chassis 5.8 H, StandardSECTION Load Test
- Connect starter load tester and voltmeter on battery terminals. Ensure no current is flowing through the ammeter and carbon pile of tester. Disconnect terminal "S" of starter relay.
- Connect remote starter switch between terminal "S" and positive battery terminal. Ensure transmission is in Park on A/T models or Neutral on M/T models prior to testing starter.
- Crank engine with ignition off and note voltmeter reading. Stop cranking engine. Turn tester carbon pile to achieve voltage obtained while cranking. Note ammeter reading. Remove carbon pile load. Replace or repair starter if current exceeds specification. See STARTER SPECIFICATIONS table.
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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.