Ford F81Z-11002-AARM Starter Motor Assembly

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If a malfunction occurs in the starting circuit, do not immediately assume that the starter is causing the problem; first, check that the battery cable clamps are clean and tight at the battery terminals, inspect the condition of the battery cables and replace any defective ones, test the battery's condition and replace it if it does not pass all tests, inspect the starter solenoid wiring and connections, ensure the starter mounting bolts are tight, verify that the starter is receiving voltage on the S terminal of the starter solenoid when the ignition key is turned to Start, and check the operation of the Digital Transmission Range sensor or clutch start switch to ensure proper function. If the starter does not actuate when the ignition switch is turned to the START position, check for battery voltage at the solenoid using a test light or voltmeter. If there is no voltage, check the ignition switch fuse and starter relay; if there is voltage but the starter motor does not operate, remove the starter and bench test it. If the starter turns over slowly, check the starter cranking voltage and current draw from the battery, ensuring the voltage does not drop below specified levels and that the current draw remains within the correct range. If the starter is getting voltage but doesn't operate, remove the starter/solenoid assembly and test it on the bench, checking for solenoid defects or potential engine seizure. When testing, connect jumper cables to the starter and apply battery voltage to the solenoid S terminal, observing the movement of the solenoid plunger and pinion drive to determine if the starter/solenoid assembly is functioning properly.

Raise the vehicle and support it securely on jackstands.

Remove the starter motor mounting bolts to detach the starter motor from the engine. The starter on V6 engines is retained by two bolts, while the starter on VB engines is secured by three bolts.

Install the starter motor back onto the engine and secure it with the mounting bolt and nut (or bolts for later models).

Check that the shift lever is in Neutral or Park.

The battery cables may become excessively heated due to the large amount of amperage being drawn from the battery. Discontinue testing until the starting system has cooled down.