I have a 1987 BJ73 with the 3B diesel.
Was driving home and suddenly the filter light and battery light appeared.
Did some forum searching and seemed like the issue was most likely related to the fuel filter. My filter is less than a year old with probably less than 2,000 miles on it, so I assumed this would be related to the water sedimenter / separator.
I drained the fuel out from the drain on the bottom of the fuel filter, then drove for 15 minutes. Both lights stayed on and it appeared the battery meter was reading a little lower than usual. But the truck actually drove a bit better than before.
Then, I drained it again and same thing, lights stayed on.
So I disconnected the batteries for a few days, came back to it and light was still on. Did one more drain, only this time, I removed the water separator completely, cleaned it, and cleaned the sensor below.
I checked the nearby fuses and they looked good as well.
Any other ideas of what I should look at? I can't imagine there is any water in the filter now. I have drained it three times completely.
Was driving home and suddenly the filter light and battery light appeared.
Did some forum searching and seemed like the issue was most likely related to the fuel filter. My filter is less than a year old with probably less than 2,000 miles on it, so I assumed this would be related to the water sedimenter / separator.
I drained the fuel out from the drain on the bottom of the fuel filter, then drove for 15 minutes. Both lights stayed on and it appeared the battery meter was reading a little lower than usual. But the truck actually drove a bit better than before.
Then, I drained it again and same thing, lights stayed on.
So I disconnected the batteries for a few days, came back to it and light was still on. Did one more drain, only this time, I removed the water separator completely, cleaned it, and cleaned the sensor below.
I checked the nearby fuses and they looked good as well.
Any other ideas of what I should look at? I can't imagine there is any water in the filter now. I have drained it three times completely.