Have Subaru Questions? Ask a Subaru Mechanic and Get Answers ASAP
Hello, Eddie here and I will do my best to help. Have you checked what the voltage is at the battery with a voltmeter while it runs for this 5 seconds? It sounds like the alternator to me. That is usually what these symptoms point to. It runs fine as long as you keep the jumper cables on it correct?
Alright, go ahead and leave the cables on it for 20 seconds or so, and see if it continues to run and then while it's running pull the neg. cable off the battery, if it dies right away, then it's not charging. and usually that means the alternator has failed.
Do you know if this is the original alternator on the vehicle or not?
Absolutely, Thank you, let me know what happens.
Any further questions for me Tom? Was the alternator the culprit? thank you.
Alright, it definitely sounds like it's not charging. Good luck with it.