A camping forum for VW bus and camper owners.
So our 79 has a new battery and been working like a champ until recently the battery died without leaving anything on accidentally. I jumped started it and it was fine until I tried to restart 20 min later. I did find a fired wire going into the regulator which was shorting on the metal body. I re-insulated and how it's fine for about 4 days and then the battery losses charge. Is my voltage leak in the regulator (should I replace it?) I also installed an aux battery at the same time (my bus is a 79) and didnt have problems initially until about 1 month after the aux was installed. The charge on the aux is fine and charged via solar controller. I tried to run without the aux to see if it contributes and the main batt still looses charge after 3-4 days.
using an amp meter do I need to trace all the circuits?
reverse fashion? not sure how. My solar system keeps my aux battery 100% charged constantly. It's the starting battery that looses juice after 3-4 days. My solar controller can charge two batteries so I put a second charge on the starting battery this weekend. With a full battery charged by the solar panel, after driving it I lose some charge (25%) on the starting battery. I think my alternator is dead, I just replaced the voltage controller. When the van runs, I measure the voltage on the starting battery and it goes up to 14 volts so I assume its charging via the alternator. I think I have to test my alternator to see if it's trully putting juice out.
Try turning your on lights, 4 ways radio ect . Run the engine a low rpm and fast rpm measure volatge. make sure cables are clean and tight.Is it amaintance free battery? If not, check water level if you can see the cells ( water below cells)it may be junk. take it in and get it tested. If you have 14v with engine on with out any accessores on you could have a draw.
Bill Witz 84 westy tiico "Old Paint"