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Get a digital multimeter (or, if you're cool like me, you have a test light with a voltmeter built in). Find a good ground, then put the contact to the alternator output. At low idle, you should be measuring between 13.6 and 14.6 volts, depending on what your alternator is and what type of vehicle you have.
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Where is the alternator fuse on a 1997 expedition?
I have a 1997 ford expedition that the alternator is not charging the battery. Had the alternator tested and it was good the battery is new. Cant find the fuse for the alternator does anyone know where it is?
How do you know when alternator is bad?
Typically you know your alternator is out when you have to jump start your car numerous times. A way you can test it is by turning on your car and while it's running discount the + terminal. If the car turns off then your alternator is bad. If the car remains in then alternator is good and possible bad battery. Hope this helps
How do you know when you need an alternator?
A new battery or one that tested good is in the vehicle and the car is still losing power. the alternator is what charges the battery while the vehicle is operating.
How do I know alternator is not good?
Your battery does not stay charged. You can take it to a shucks or napa to have it check free. Ed
How do you know whether its your battery or your alternator?
Start the engine and using a digital volt meter check the voltage at the battery with the engine running. If the alternator is good you will read from 13.5 to 15.5 volts DC.
How do you test lawnmower alternator output?
Just hold the plug wire and pull the starter, you'll know if it's good.
87 Monte Carlo alternator is good still wont charge battery?
If the alternator is good then the battery is bad.
What would cause a good battery to not stay charged on a buick park avenue 86?
ALTERNATOR OR THE BATTERY GROUND WIRE Have you tried checking your Alternator? I know this is why mine on my vehicle would not stay charged..
What alternator is good for a Chevy Chevelle?
a 1 wire 100 amp alternator.
How do you know if you got a bad starter on 99 Plymouth voyager van?
a sound that goes click,click,click,click,then maybe a start. and that's if you know you have a good battery good alternator and fuses are all good just to keep it safe you know that goes
How does an alternator know how much voltage output?
Output of the alternator is controlled by the voltage regulator.
Replace alternator on 1995 Nissan pickup?
go to autozone.com and enter your 94 Nissan info,engine size ,2wd or 4wd,then look up alternator,then to the right of screen look up repair guide,it will tell you what you need to know to replace your alternator,good luck.
