Clearly Amazing .. I have watched so many videos on this .. Yours makes so much sense. I never once had to stop and rewind so I could listen again and again. ThankYou Crystal clear explanation!4
Hi, I hope any one can help me, checking the battery/alternator I have notices that when the engine is runing the multimeter (at battery) reads 14.3-14.5 V but suddenly the voltage drop dramatically to 2-3 V but almost instantly get back to 14.3-14.5 V, do you know the possible root cause? Hopping you can help me...
That is just a test, bu a friend of mind got stucked at the middles of the street and the mechanich told him that was the alternator that stopped work. How to diagnos a bad alternator in this case -- Symptoms or signals?
My car reads 14.2 when the alternator is running, but when the fans kick every 5 seconds, it drops to about 12.7 and then comes back up quickly. The battery does not appear to be charging enough, I turn the car on and when I drive it, the voltage on the battery is not a lot. I cannot explain why this is happening, it gets better when I change the battery, it lasts about 1 year and it starts all over again. This is on a Honda Accord 2008 EXL.
Excellent video for DIY'ers! YT is an excellent option for fixing cars! Have faith people,YOU CAN DO IT! To hell with $100+/ hr. Labor rates! And nothing is better than a little pride from doing it yourself!
Very well done video! Have you ever seen a main power fuse 'blow' because power output of the alternator has reached 15V? Also, is there a 'signal' sent by the ECM to the regulator that tells the regulator to increase or decrease the voltage?
This gentlemen give really the best explanation how things should be going on. Thank you and go bless you!
I have a 95 Eclipse, all I get is crank, no start. I have done the following, new crankshaft sensor, new timing belt, new starter, new battery, new fuel pump w relay, new coil wires, ASD relay which is the (Auto Shutdown Relay, same as fuel pump relay) keeps shutting off after a few cranks, STILL NOTHING. Should I also change the Alternator, camshaft sensor and coil pack? I have spark. I have not checked for fuel compression yet. PLEASE HELP asap
Here's something: try to find someone who has a 2001 GMC Sierra 1500 and see if the stuff works here.
hey my alternator charges 15.3 v changed new regulator nothing changed what could be issue there help ?
I have a 01 Camry,it’s a 4 cylinders. Question regarding the three wires connector at the back of the alternator. Mine,all three wires have battery voltage. The engine shakes. When I unplug it, it runs smooth. One wire should have battery voltage,right ? The other two wires are for what use ? Can you tell me ? Thank you
Now I know what a voltage regulator does. It energises the rotor coil to produce a magnetic field which in turn produces the charging current when the alternator turns. Remember Flemmings right hand rule. When a conductor moves through a magnetic field a voltage is produced across that conductor and hence a current if the conductor is part of a circuit.
Nothing about current readings. Voltage regulator might be defective and putting out low amperage and still you have 14 V but not enough to charge the battery.