Can a bad alternator cause an engine Rattle?
This seems like a vague symptom–after all, lots of things can cause unusual noises in the car. However, sometimes alternator failure can cause some of the bearings to fail in the engine, creating unusual rattles. The alternator might be the culprit, especially if accompanied by some of the other symptoms we’ve mentioned.
What are the symptoms of a failing alternator?
However, sometimes alternator failure can cause some of the bearings to fail in the engine, creating unusual rattles. The alternator might be the culprit, especially if accompanied by some of the other symptoms we’ve mentioned. 5. Car stalls or has difficulty starting.
What causes an alternator to go over base voltage?
If you are getting more than 2 volts above base voltage, most likely your alternator is over-charging the battery or the battery is faulty. Other potential problems are a faulty voltage regulator or a problem in the charging system wiring.
Why does my alternator make a whining noise?
Yes, it sure can! Your alternator has bearings inside that allows the pulley and stator to spin with the engine belt. If the belt is rubbing on the pulley due to misalignment or the bearings are worn out your alternator could indeed make a whining noise.
Is the alternator on BMW R90S the same as BMW authorities?
The Authorities model has the same 238 watt rating as the R90S; but, is designed to produce usable output at a slightly lower rpm than all the others, except the very last Airheads. Almost all alternator parts are physicallyinterchangeable (the 105/107 mm stators being the exception).
Why is my alternator not working on my BMW airhead?
The charging on later standard & Authorities models can be poor if the associated rotor is not the correct version. Otherwise, most any years of the Airheads Bosch charging system alternator parts can be interchanged, and work ‘adequately’.
How many phase stators are in a BMW airhead alternator?
Three phase stator windings (most any alternator, generally) are actually three separate windings, so there are six wires. These can be connected in a delta format, or a Y (wye) format. Only in the Y (wye) format can a center-tap be available; which offers additional output, so all the Airhead Bosch stators are so connected.
If you are getting more than 2 volts above base voltage, most likely your alternator is over-charging the battery or the battery is faulty. Other potential problems are a faulty voltage regulator or a problem in the charging system wiring.