Rapid Voltage Loss while driving/idling
I have a 99 Safar Sahara (C) diesel, I've had various problems with the electrical system, dead chassis batteries, bad isolator, etc... Now I'm facing a new problem. When driving (currently j...
Forum Discussion
Sounds like it could potentially be a glow-plug problem. How cold is it where your are? Does plugging in the block heater make a difference?
Sometimes the glow plugs can short internally, and dramatically drop system voltage.
Also the injection control harnesses where they enter the valve covers are another common system short.
Because your symptoms lessen when you add the house batteries, it makes suspicious the problem is on the chassis side.
Once the battery connections have been verified, I would start looking for sources of excess draw, like the ones I mentioned.
Sometimes the glow plugs can short internally, and dramatically drop system voltage.
Also the injection control harnesses where they enter the valve covers are another common system short.
Because your symptoms lessen when you add the house batteries, it makes suspicious the problem is on the chassis side.
Once the battery connections have been verified, I would start looking for sources of excess draw, like the ones I mentioned.
