bad alternator?
#11
Registered User
Please dont give out information that can lead to a seriously high repair bill.. doing this might destroy your cars entire wire harness and just about everything else that is electronic too, since the battery acts as a regulator for the alternator, keeping the voltage close to 12 volts. Without the battery this can surge to 40 volts or more, burning out your electronics... not a good idea
#12
Originally Posted by Mister Jew' timestamp='1336416222' post='21676525
I always check my alternator by removing the positive battery terminal while the car is running. If the car shuts off the alternator is faulty
#13
Registered User
Originally Posted by Mister Jew' timestamp='1336416222' post='21676525
I always check my alternator by removing the positive battery terminal while the car is running. If the car shuts off the alternator is faulty
Never heard anyone disagree with this before. Been doing it for 14 years and have seen over 10 ase techs do it the same way. I guess I can see your point as well.
#14
It is not recommended to do with any late model car with ECU's. Say about 1995 on up. You'll still see it done, sure. But you take your chances. Once in a while, the voltage or current surge will damage an ECU.
#16
Registered User
Originally Posted by 305AP1' timestamp='1336419256' post='21676697
[quote name='Mister Jew' timestamp='1336416222' post='21676525']
I always check my alternator by removing the positive battery terminal while the car is running. If the car shuts off the alternator is faulty
I always check my alternator by removing the positive battery terminal while the car is running. If the car shuts off the alternator is faulty
Never heard anyone disagree with this before. Been doing it for 14 years and have seen over 10 ase techs do it the same way. I guess I can see your point as well.
[/quote]
not to mention its the ground you want to disconnect not the power. this was the procedure back when cars had no ecu now its a different ball game. disconnecting the power can cause a short or a spark between the terminal and the cable, or even the chassis.
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