Ford 5S4Z-11002-A Starter Motor Assembly

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Apply the parking brake, then jack up the front of the vehicle and support it on axle stands.

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

Disconnect both wiring harnesses from the starter and move them to the side, then disconnect the ground wire and move it to the side.

Check for battery voltage to the solenoid to determine if it is receiving the correct voltage signal from the ignition switch. Connect a test light or voltmeter to the starter solenoid switched terminal (the small wire) while an assistant turns the ignition switch to the start position. If voltage is not available, check all the fuses and relays in series with the starting system. If voltage is available but the starter motor does not operate, remove the starter from the engine compartment and bench test it.

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.

Remove the starter motor mounting bolts and then remove the starter from the engine.