Ford — Bench Tests
Testing & diagnosis · Starter motor
From a Ford service manual — check it applies to your exact model before use.
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Before you start
- Make sure that the starter is securely mounted in bench vise while energizing, as starter will move or jump.
Procedure
- Connect a fully charged battery, Rotunda Starting and Charging Tester 078-00005, or equivalent. Make sure that the battery and starter motor are grounded.
- Engage the remote starter switch.
- The starter motor should eject the starter drive and run smoothly. If the starter motor does not run smoothly, replace it.
- While the starter motor is running, check the voltmeter and ammeter.
- If the voltage is lower than 11.0 volts, or the amperage is higher than 70 amps, replace the starter motor.
Tools required
- Rotunda Starting and Charging Tester 078-00005 Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- 11.0 volts minimum
- 70 amps maximum
- Service parts for rebuilding permanent magnet starter are not available from Ford Power Products
Source: Ford service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.