Question about 1999 Ford Mustang Cobra

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1999 ford mustang cobra alternator troubleshooting

How can i test the alternator on my 1999 ford mustang cobra with a dead battery.

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Generally, you can check and test alternator with this procedure...

1. Clean the positive and negative battery terminals to ensure a good connection with the tester's clamps.
2. Connect the positive and negative clamps to the appropriate battery terminals. The clamps must make firm contact with the battery terminals or the test results will be inaccurate or the tester may not work at all.
3. Turn the tester on and choose the option for "full charging system test." This will test your battery, starter and alternator and provide the most accurate picture of the problem.
4. Follow the directions on the tester's screen. These instructions will include cranking the vehicle after the battery test is performed, holding the engine at a certain RPM range and turning on certain accessories.
5. Read the results displayed on the tester's screen. The tester should scroll through the results, starting with the battery, then the starter and finally the alternator. An alternator test result showing diode ripple problems indicates a bad alternator.

Hope helps (remember rated this).

  • Step 2 Connect the positive and negative clamps to the appropriate battery terminals. The clamps must make firm contact with the battery terminals or the test results will be inaccurate or the tester may not work at all.
  • Step 3 Turn the tester on and choose the option for "full charging system test." This will test your battery, starter and alternator and provide the most accurate picture of the problem.
  • Step 4 Follow the directions on the tester's screen. These instructions will include cranking the vehicle after the battery test is performed, holding the engine at a certain RPM range and turning on certain accessories.
  • Step 5 Read the results displayed on the tester's screen. The tester should scroll through the results, starting with the battery, then the starter and finally the alternator. An alternator test result showing diode ripple problems indicates a bad alternator.

  • Read more: How to Test a Car's Alternator | eHow.com http://www.ehow.com/how_2079784_test-cars-alternator.html#ixzz0spTYveGJ

    Posted on Jul 05, 2010

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    Fig. 1. The regulator and brush/terminal holder are mounted on the backside of the alternator

    archaeology_70.jpg


    Fig. 2. The regulator and brush/terminal holder are secured by 4 Torx® head machine screws


    archaeology_71.jpg

    Fig. 3. Hold the regulator while removing the screws to prevent the regulator from dropping out and damaging the brushes

    archaeology_72.jpg



    3. Hold the regulator in one hand and pry off the cap covering the A terminal screw head with a small prybar.

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    Fig. 4. Slide the regulator out-the brushes will move out of the holder

    archaeology_73.jpg


    Fig. 5. The brush and terminal holder can be separated from the regulator once it is removed from the alternator

    archaeology_74.jpg


    =========================================================
    To install:

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    Fig. 6. When installing the regulator, press the brushes back into the housing

    archaeology_75.jpg


    Fig. 7. Use a thin piece of soft material, like this plastic wire tie, to hold the brushes in position while replacing the regulator, or use a paper clip inserted in the hole

    archaeology_76.jpg



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