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All warning lights stay on after starting ea81


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10 replies to this topic

#1 BobBrumby

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Posted 28 July 2007 - 02:55 AM

I did a quick search and just wont to clairify before I get left at the side of the road with a dead battery:

The other night I started my brumby and all the warning lights, except oil pressure, stayed on. Brake fluid, charge, handbrake, tail lamps where the ones that where left on. I found it highly unlikely they all failed at once so decided to drive. Kept checking them during transit and about 5 minutes into my commmute they went out, I make it back home. I go out and start it the next morning and its back to normal.

Is this a dodgy alt? Can you just replace the diode bridge in the Alt?

#2 Skip

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Posted 28 July 2007 - 07:49 AM

" Is this a dodgy alt? "


Yes it is.


"Can you just replace the diode bridge in the Alt?"

Yes, but this sounds more like worn brushes.

#3 grossgary

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Posted 28 July 2007 - 01:11 PM

sounds like your alt or possibly battery has issues. you can also check the connections, i'm not EA81 fluent but if the connectors at the alternator are bad...corroded, weak, broken, brittle plastic, you may get similar issues. fix soon, this weakens batteries and alternators.

#4 BobBrumby

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Posted 10 August 2007 - 02:42 AM

Put a voltmeter accoss battery terminal at idle it read 14v and at 5000rpm it reads 16v, dodgy voltage regulator? You guys recon a new altinator or a remanufactured one?

#5 joostvdw

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Posted 10 August 2007 - 03:25 AM

it sounds like it's putting out enough

but, measure in AC (not airco, alternating current) this time, you'll check your diodes this way, I don't know the exact number, but ideally this would be 0V

also, like gary said, check all the wiring, I know some cars have solid positive wires going to the starter and they get brittle over time.

#6 DaveAP

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Posted 10 August 2007 - 09:21 AM

A friend of mine recently replaced the alt. in his brat, without disconnecting the battery. Ended up frying the fusable link. Car wouldn't start but would turn over. When it was turning over it showed all the warning lights.

#7 Cougar

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Posted 10 August 2007 - 11:24 AM

If you can get a remanufactured Bosch unit I think you will be happy with it. Like another poster mentioned, since the alternator output is hot, disconnect the battery before working on the alternator.

#8 BobBrumby

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Posted 10 August 2007 - 10:02 PM

yeh i got it all done and no sparking of charging cable, seems to be working fine, have to wait till tonight to see if the lights are still dim tho.

#9 TheBush

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Posted 11 August 2007 - 01:42 AM

I'm thinking just get a new alternator. I'm not the best person to ask, but in my 91 Loyale, I revved it up way too high doing broadies in a snowy parking lot. Car died, and when I turned it back on, all dash lights wanted to stay on.


Was def the alternator. Got a new one, and fixed.

#10 Gloyale

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Posted 11 August 2007 - 02:11 PM

If you can get a remanufactured Bosch unit I think you will be happy with it. Like another poster mentioned, since the alternator output is hot, disconnect the battery before working on the alternator.


I had one of these fail on me. Turn the key, no warning lights at all. Start it like that and it would run for ten minutes before the digidash started dieing. But if I whacked it with a wrench til the dash light came on before starting, it would charge and work fine. Eventually I replaced it. But I won't buy a Bosch anything again.

#11 Cougar

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Posted 11 August 2007 - 02:35 PM

I had one of these fail on me. Turn the key, no warning lights at all. Start it like that and it would run for ten minutes before the digidash started dieing. But if I whacked it with a wrench til the dash light came on before starting, it would charge and work fine. Eventually I replaced it. But I won't buy a Bosch anything again.


My unit worked just fine and it came with a lifetime warranty. Sorry to hear you had problems with yours.




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