What is the easiest way to check the output of the alternator?
I have my multimeter but the alternator seems rather hidden and hard to get to. my battery is dead and I want to check the alternator before i buy a battery, as it may be that my battery is good still.
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Re: 2001 jag S type alternator check
You probably have taken care of this by now (it is courteous to stop by and let us know that by commenting your message) but if you are in the US, most all of the chain parts stores will check it under load for you and surely tell you if either battery or alternator is ill.
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When you swapped the alternator, did you also changed the alternator rectifier? Looks like its either rectifier problem or problem with battery itself. Try using battery from another car and see if its charging. This will be the easiest troubleshoot for now. If still not charging then use a multimeter to check the output of alternator.
It could be the starter, but first check your battery if it does not have a full charge your starter is not getting enouf power to turn over the engine, If the battery is good then you need to replace the starter somtimes with the starter the problem could be intermitten, for further help feel free to call me at 4196891712 for 24/7 support.
You need to get the alternator output checked.
If you can smell something like rotten eggs then what you are smelling is hydrogen gas which is explosive !!
Batteries get hot and smell because the alternator is charging at too high a level. Check the output with a multimeter across the battery with the engine running. If it reads higher then 14.4 volts, its the alternator and you need to fix it as overcharging of your battery will cause total failure (if it has not already screwed your battery)..
The manufacture recommends using the CS electronic generator tester to check alternator output while on the vehicle, but you can go by a AutoZone or advance auto store and they would check the alternator for you.