86 land cruiser diesel dash light problem

[webitmuddy]

I have a 86 land cruiser diesel. The orange filter light, the park brake light and the battery light come on. Once in a while when I drive down a rough road all those lights go out and every thing is normal for a while. Then the next time I look at the dash those 3 lights are back on. Any help would be great.

 

[Estancio]

86 ... what model of Landcruiser ?

 

[Spudman]

Sounds possibly like a 60 series, but need more info. The problem also sounds like a earthing issue,

 

[webitmuddy]

Hj 60

 

[BreckenridgeCruiser]

I think I remember alternator brushes can do this when they are worn. Do a search for brushes and see if you find similar stories.

 

[webitmuddy]

Thanks for your help Breckinridge that led me to a post that told me to check my charge lamp relay. Sure enough the relay is no good. So now I just have to see if my alternator is what caused the relay to pile up

 

[BreckenridgeCruiser]

Glad I could help, even if your issue is not the brushes! Let us know what you discover with your alternator... I'm swapping one tomorrow so I can change the brushes out of the current one.

 

[webitmuddy]

Load tested alternator. Every thing seems ok I'm getting just over 28 volts at 1500rpm

 

[Squash]

Check belts make sure they are tight.
Try disconnecting the alt. plug, regrease with dielectric grease.
Pretty common on the HDJ81 the unplug seems to offer a temporary cure.