Performance Test

2014 Subaru Forester 2.5i, Eng CD FB25BA, Standard TransSECTION Performance Test

The starter should be submitted to performance tests whenever it has been overhauled, to assure its satisfactory performance when installed on the engine.

Three performance tests, no-load test, load test, and lock test, are presented here; however, if the load test and lock test cannot be performed, carry out at least the no-load test.

For these performance tests, use the circuit shown in figure.

Fig 1: Measuring Starter Speed Using Tool
G09476723Courtesy of SUBARU OF AMERICA, INC.
  1. Adjust the variable resistance with the switch on until the voltage is 11 V, and read the value displayed by the ammeter to measure starter speed. Compare these values with the standard.

    No-load test (standard): 

    Voltage/Current 

    Non-turbo CVT model 

    Max. 11 V/90 A or less 

    Non-turbo MT model 

    Max. 11 V/95 A or less 

    Turbo model 

    Max. 11 V/90 A or less 

    Rotating speed 

    Non-turbo CVT model 

    2, 370 rpm or more 

    Non-turbo MT model 

    2, 500 rpm or more 

    Turbo model 

    2, 000 rpm or more 

  2. Apply the specified braking torque to starter. The condition is normal if the current draw and starter speed are within standard.

    Load test (standard): 

    Voltage/Load 

    Non-turbo CVT model 

    7.5 V/10.65 N.m (1.1 kgf-m, 7.8 ft-lb) 

    Non-turbo MT model 

    7.5 V/8.84 N.m (0.9 kgf-m, 6.5 ft-lb) 

    Turbo model 

    7.7 V/16.7 N.m (1.7 kgf-m, 12.3 ft-lb) 

    Current/Speed 

    Non-turbo CVT model 

    300 A/840 rpm or more 

    Non-turbo MT model 

    300 A/870 rpm or more 

    Turbo model 

    400 A/710 rpm or more 

  3. With the starter stalled, or not rotating, measure the torque developed and current draw when the voltage is adjusted to standard voltage.

    Lock test (standard): 

    Voltage/Current 

    Non-turbo CVT model 

    4 V/780 A or less 

    Non-turbo MT model 

    4 V/680 A or less 

    Turbo model 

    3.5 V/960 A or less 

    Torque 

    Non-turbo CVT model 

    20 N.m (2.0 kgf-m, 14.8 ft-lb) or more 

    Non-turbo MT model 

    17 N.m (1.7 kgf-m, 12.5 ft-lb) or more 

    Turbo model 

    31 N.m (3.2 kgf-m, 22.9 ft-lb) or more 

RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.