Ford 6S4Z-11002-AA Starter Motor Assembly

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The cost of repairs should be checked to determine if it is more economical to obtain a new or exchange starter.

Unscrew the mounting bolts from the starter motor.

Check the starter cranking voltage and the current draw from the battery. This test must be performed with the starter assembly on the engine. Crank the engine over for 10 seconds or less and observe the battery voltage; it should not drop below 8.0 volts on manual transaxle models or 8.5 volts on automatic transaxle models. Also, observe the current draw using an amp meter; it should not exceed 400 amps or drop below 250 amps.

No, it's not necessary, but detaching the center bearing support bracket will provide enough room to remove the starter.

Disconnect the battery cable (the large cable) and the starter control electrical connector from the starter motor solenoid terminals.

Remove and check the starter/solenoid assembly on the bench. The solenoid is likely defective. In rare cases, the engine may be seized, so try to rotate the crankshaft pulley before proceeding. With the starter/solenoid assembly mounted in a vise, connect jumper cables from the battery to the starter and apply battery voltage to the solenoid S terminal for 10 seconds or less. Observe the solenoid plunger, shill lever, and overrunning clutch. If the pinion drive extends but does not rotate, the starter motor is defective. If there is no movement but the solenoid clicks, either the solenoid or the starter motor is defective. If the solenoid plunger extends and rotates the pinion drive, the starter/solenoid assembly is functioning properly.