Ford — Starter Load Test
Testing & diagnosis · Starter motor
From a Ford service manual — check it applies to your exact model before use.
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Procedure
- Connect Rotunda Starting and Charging Tester 078-00005 or equivalent. Make sure that current is not flowing through ammeter and heavy-duty carbon pile rheostat portion of circuit (rheostat at maximum
- Place transmission or transaxle in NEUTRAL.
- Crank engine with ignition off, and determine exact reading on voltmeter. This test is accomplished by disconnecting push-on connector S at starter relay and by connecting a remote control starter swi
- Stop cranking engine, and reduce resistance of carbon pile until voltmeter indicates same reading as that obtained while starter cranked the engine. The ammeter will indicate starter current draw unde
Tools required
- Rotunda Starting and Charging Tester 078-00005 or equivalent Amazon
- remote control starter switch Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
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.