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Dodge Alternator Problems

Essentially an alternator is an electro-mechanical device that converts mechanical energy to electrical energy in the form of alternating current. Generally alternators use a rotating magnetic field with a stationary armature but sometimes, a rotating armature is used with a stationary magnetic field. Alternators used in automobiles such as the Dodge are small rotating machines driven by automotive and other internal combustion engines. They are used to charge the battery and power the electrical system while the engine operates.

To understand more about a few common Dodge alternators problems, below are a few questions answered by Experts.

How can the Dodge alternator be removed on a Neon?

The key to removing the Dodge alternator in this case is through the passenger side wheel well. The steering should be turned completely to the right. The wheel well splash shield should be removed to come down out through the well.
1. The battery ground cable should be disconnected
2. The alternator adjustment nut loosened
3. The front wheels should be turned completely to the right while the vehicle is raised and supported
4. The lower splash shield should be removed
5. The alternator wiring disconnected
6. The alternator pivot bolt should be loosened and removed
7. Next the three bolts from pivot bracket should come off
8. A pivot nut from T-bolt should be removed while the Dodge alternator is supported
9. The Dodge alternator should be lowered and removed through the wheel well
10. The reverse of the above procedure is to reinstall the alternator while keeping in mind the following points:
a. The torque alternator mounting bolts to 40 ft. lbs.
b. The torque alternator feed terminal nut to 75 in lbs

Why does after a Dodge alternator replaced the battery light remain on and fail to charge and the engine does not crank?

In this scenario, it is quite likely that the security module is faulty. The voltage on both field wires should be checked as well as the output terminal. The volts should be 0 on one field wire and 2-12 volts on the other. The output terminal should be similar across the battery. In case voltage is absent on either field wires, the wire to the Powertrain Control Module (PCM) should be checked. If the wire is fine, most probably the PCM is defective.

What are the different methods used to test diodes on a Dodge alternator present in a 1999 Dodge RAM 1500?

One of the easiest ways to check the Dodge alternator diodes is through the use of an oscilloscope which should be connected to the alternator output terminal while the Dodge alternator is functioning on the truck. Typically a normal rectified alternator wave forms a series of smooth even humps above the zero volts baseline on the screen. In case Dodge alternator problems are present such as a shorted or open alternator diode, the pattern is affected drastically based on the nature of the failure.

A charging ripple tester is also able to diagnose diode problems. Though it follows the same principle as an oscilloscope, it may not have a waveform display, instead a good or bad indicator. Excessive ripple in the alternator output is also considered an indication of diode failure.

The last and the most complicated method to check the diode is by removing the diode assembly from the Dodge alternator and using an ohmmeter to manually check the diodes for resistance in one direction. Next the ohmmeter leads should be swapped to recheck the same terminal where infinite resistance should be present in one direction and no resistance in the other direction. Some shops may have special diode test features to achieve this.

What is the significance of the black box connected to the Dodge alternator on a 1994 Dodge RAM 5.2 mark?

The black box usually present at the rear of the alternator is a molded connector meant to hook the Dodge alternator to the electrical system. Typically two small eyelet connectors close to the center are the field power and control circuits. The larger terminal is meant for the alternator case grounding while the larger (shielded) eyelet is meant for alternator output to the battery. Since logic controls are absent within the mold connectors, the actual charging system control is within the engine controller, the SBEC II.

After a new battery and charged Dodge alternator was installed in a Dodge Neon, why does the battery light remain on?

Sometimes the alternator wiring can stretch excessively when the engine moves causing it to break. When this occurs, the power is reduced to the field circuits. Hence the wires should be pulled to confirm.

Dodge alternator problems can be many and sometimes related component problems can affect the functioning of the Dodge alternator. There can be times when Dodge alternator replacement is required. In such a case, you could be looking for advice, second opinions or information on the process or system. At this juncture a knowledgeable person such as an Expert can be helpful to guide you in a step-by-step manner or provide you with important and useful information regarding your Dodge alternator problem.
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