i have 1989 saab ems, when the charge light is on,the car sudden stoped,RACV people said it was alternator fault,,later i changed alternator,it was second hand one from volvesaab parts,when i put replacement ,i start the car,the charge light is still on,i checked battery, it i was not charged, can anyone who is expert on the saab tell me what else could be wrong? i checked alternator drive belt,i think it is correctly tensioned.
so if the replacement of alternator is also deflective,how can i check whether is alternator problem or voltage regulator problem, because i have three month warrant .so i have to make sure it is alternator problemI have a saab 900 ems 1989 car, i changed alternator but it still not charge,what else could be wrong?Look at the alternator for a wiring connection marked field,or f1.Check it with a test light or volt meter to be sure it is energized when the ignition is turned on.If it isn't,there may be a fault with the circuit and it may be fused.If it checks out,the next suspect is the regulator which should be checked for poor connections or replaced.You can find out if the charging system is working by briefly disconnecting the battery with the engine running.If it continues to run,the system is OK,if it dies,the charge system is dead.I have a saab 900 ems 1989 car, i changed alternator but it still not charge,what else could be wrong?well to check your alternator the first thing you can do is get yourself a mutimeter ( they are around 10 bucks from a electronic store) then while the car is running switch the mutimeter gauge to Volts then connect the positive(red) lead to the positive on the alternator (there should be a + sign) and the
black lead on the mulitimeter to the body of the alterantor to get a good ground.
if the meter reads over 13.1 volts then the alternator is good if not then the magnets inside the alternator may be worn down or the alternator coil may be broken.
its sounds to me as though you may have a charging system problem, if the battery is good then there could be an open in the charge system somewhere, auto electrics are best for finding faults like this since they have all the equipment at hand...goodluckI have a saab 900 ems 1989 car, i changed alternator but it still not charge,what else could be wrong?On some designs the voltage regulator is built into the alternator, and on others it is a separate module, often mounted somewhere on the inside fender well. A bad voltage regulator could cause your problem, as could a dead short.
