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Battery Charging problem!! er34

Coxy_

By Coxy_,
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Coxy_ Collaborator

Coxy_

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Got a problem!!!

I had my car dyno'd last night and as soon as it came off I noticed the battery warning light is on and the car seems to be charging the battery now at 16v, even on idle?? - I had a look today and there is fresh corrosion all over the positive terminal. Has anyone had this problem before or know what it might be?

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https://www.sau.com.au/forums/topic/72858-battery-charging-problem-er34/
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Coxy_ Collaborator

Coxy_

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As above.

Sounds like your alternator is overcharging the battery, this will greatly shorten the life of the battery and at worse case may cause it to leak.  Get the voltage regulator/alternator checked by an auto elec.

cool, Im going to take it somewhere tomorrow and get them to check it out - Im not sure but it looks as if the seals on the screw tops on one of the cores is maybe busted out...... :)

do you guys have any idea on what that would cost to fix by any chance??

Sumo Mentor

Sumo

Posted
Posted

The Battery light is an indicator for the altenator only, it does not come on if the battery is stuffed.

The light excites the alt, and if it is not regulating the reg must have given up the ghost.. If you remove it it will be cheaper for you, just tell the auto elec that she is charging at 16volts and let him go from there. Nothing is worse then someone bringing in a alt/starter and saying "this dont work" without acctually seeing what its doing.

Saying that the reg is stuffed might also be incorrect as most alts have a voltage sensing wire, and it has blown a fuse or has a break in the wire, the alt will detect no battery voltage and therefore charge flat out.

Cheers

Sumo

Sumo Mentor

Sumo

Posted
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ouch, that sounds a bit pricey.

But I would dare say the labour component in sydney would be far dearer then out here.

Damage?? what kind of damage is he looking for? only time damage occurs is if the stator burns out or a bearing collapses.

Cheers

Sumo

Coxy_ Collaborator

Coxy_

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Hey guys!! It ended up being fixed - if i had more time I would have shopped around for the price but needed it fixed quickly..

The guy ended up replacing the bearing and the regulator (looks really wierd? has a heatsink on it and a round circle area? looked like the bearing sat in there) - it ended up costing $269 all up. The guy seemed to know what he was doing, and its working fine. Crisis over!!! hehe

Col-GTSX Grand Master

Col-GTSX

Posted
Posted

Most autoelec's do... LOL

Its always good practice to do bearings when servicing an alt... Shop policy here otherwise we will sell the reg and you do it. The labour on an r34 would have been the reason for the $200 part of the job. Ripping an alt down and working on it will take $50 worth of parts and about 20 minutes if nothing too serious. Its the pulling this off to get to that and then putting it all back together which is where most of your money went. But $269 is good....

Coxy_ Collaborator

Coxy_

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hehe I guess you'd definitely hope so!!!!!!

the price for the reg was put down at $90 and the bearing was $35. The rest of it was put to labour, he said there'd be about 2 hrs of work in it (maybe also the fact that he didnt really know what car it was!!!! hehe he was an old bloke)

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