99 I30 infiniti

[ginny915]

Car will jump start but won't stay running. Had alternator checked out 2 wks. ago and was putting out 13.8 v so don't understand what happened. Had car towed home and put charger on it and don't think it is taking charge. Can battery have caused alternator to go out also? Also is it possible to have a direct short causing this problem? If so how would I go about finding the short. Have had alot of problems with starting. Key shuts off security system but not even a click sometimes. Thought maybe it was in ignition but haven't had the money to have mechanic check it out.

[MaximA32]

It could be a bad voltage regulator in the alternator or a bad cell in the battery. Have you had the starting/charging system load tested? I know most Autozones will do this for free in hopes of selling you a new battery.