89 nissan pathfinder ran great until recently the brake light came on the ABS light came on the stalled altogether and then i was stuck, friend jumped it but does not keep running is this the alternator then?
Most likely yes. If you can charge the battery (get it tested after charging as well) up a quick way without any special equipment to find out if your alternator is charging is with as many electrical loads turned off as possible (heater/a/c blower, headlights,heated seats,stereo etc...) Start the engine (after battery is charged) remove one of your battery cables while the engine is running, if the engine immediately stalls your charging system is not charging. If it stays running it is charging. Do not reconnect cable until you turn the engine off to prevent damaging the alternator.
If it stalls the most likely reason is the alternator. There are still other things that may prevent it from charging. Many alternators are regulated by the computer so it could be a computer or a wiring issue or even a blown fuse. If you can remove the alternator without much difficulty then remove it and take it to a auto parts store and have them bench test it. Last but certainly not least make sure your cables are clean inside and out. An alternator cannot charge a battery with poor corroded connections.
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