Red battery light on when driving over 65mph?

[cubensis]

Hi all, i dont often do 65mph except when going down hill! Whenever the van reaches this speed the red battery light comes on on the console that contains the speedo etc. Just wondering if anyone had any info on this and whether its actually damaging?

1.9 WBX
1986
T25 Hightop

[toomanytoys]

plainly something isnt right.. and needs checking.. does it do it at same rpm in lower gears (as speed has nowt to do with it) engine rpm does....

Check the voltages at idle and reved up, could be that the alternator is packing up, or might just be the brush pack and regulator thats at fault..

[kevtherev]

or might just be the brush pack and regulator thats at fault..

I think so too.. not an expensive replacement either

[cubensis]

It only ever does it at around 65mph, so couldn't really check lower gears as i couldnt do 65 in third or lower. I know what your saying about RPM i already suspected that the speed wasn't the issue. To be honest i'm not massively fussed by it as it only happens at the top speed and i generally cruise at 60mph, when im at 60mph it has never happened. Might get my mechanic to have a look when its next in. Will try changing brushes also, cheers!

P.S. Does anyone think this is actually serious?

[toomanytoys]

no it wont do 65 in second... that NOT what I said...

Depends on if you call loss of charge (= flat battery, no lights and non running engine) miles from home on a dark sunday eve in the wet and cold.. serious......... if it does go, then its likely to do it at the most inconvenient time possible..