What should I do if my alternator goes short?
Disconnect the big main cable to the alternator and see if the short goes away. If it does, then use your meter to measure the ohms between the alternator post and the alternator case. You should have continuity in one direction and if you switch leads you’ll have no continuity. This will tell you the diodes are good or shorted in the alternator.
Is the isolation post on a 12V alternator?
Is not the isolation post on the alternator where you hook up your 12v to keep the 12v from dead shorting. Why the continuity from positive post terminal to ground areas of motor and body of alternator. There is a specific way the wiring must be done when you install a larger than 65 amp alternator and that wiring I am sure is right.
When to install a larger than 65 amp alternator?
There is a specific way the wiring must be done when you install a larger than 65 amp alternator and that wiring I am sure is right. Please, WHAT AM i MISSING. I am supposed to be leaving for holidays in two hours and I need my car. HELP>….. DUNCAN Matheson My car has a manual transmission.
Disconnect the big main cable to the alternator and see if the short goes away. If it does, then use your meter to measure the ohms between the alternator post and the alternator case. You should have continuity in one direction and if you switch leads you’ll have no continuity. This will tell you the diodes are good or shorted in the alternator.
What happens when a diode is short in an alternator?
Getting back to my story about diodes, it is rare to see a shorted diode in an alternator that is still in the circuit. What I mean is, . . . a diode is a one-way valve for electrical current flow. When shorted, it acts like a piece of wire and lets current go both ways through it. That makes it get real hot real fast, then its lead burns open.
What should my alternator output be on my car?
No Probs, to make it easier, just test the output at the battery, not sure on the specs of your alternator, but it should put out close to 13.8v, mine puts out 14.2v but it should give you an idea. if it’s 12 or less, the alternator isn’t putting out anything. Huh, Did everything just taste purple for a second?
What happens to the battery when the alternator is not operating?
In the reverse direction, as they are when the alternator isn’t operating, their job is to block current flow from discharging the battery. That reverse current will be in the order of microamps, not amps.