Pinpoint Test C: The Engine Cranks Slowly

WARNING: This page is about a different car, the 2006 Ford Pickup, 2006 Ford F550 Super Duty, 2006 Ford F450 Super Duty, and 2006 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Before beginning this test, be sure that the battery is tested and fully charged.

C1 CHECK THE VOLTAGE TO THE STARTER
- Key in OFF position.
- Measure the voltage between starter motor solenoid positive terminal and ground.
  
  Fig 1: Checking Voltage To Starter
  Courtesy of FORD MOTOR CO.
- Is the voltage 12.5 volts or greater?
Yes : Go to C2.

No : REPAIR the circuit between the battery and the starter solenoid. CLEAN and TIGHTEN the connections at the battery terminals. TEST the system for normal operation.
C2 CHECK THE MOTOR GROUND CIRCUIT

Carry out the Motor Ground Circuit test. Refer to COMPONENT TESTS .
Is the ground OK?

Yes : INSTALL a new starter motor. TEST the system for normal operation.

No : REPAIR the ground circuit as necessary. TEST the system for normal operation.