16 replies to this topic

[evopwr]

Hey guys,

 

May be a silly question, but what does it mean when the battery light comes up on my dash?

 

My battery is fully charged.

[VIN18M]

Alternator may be on it's way out...

[leadfoot]

Yep it relate to the alternator either give poor intermittent or no charge

[evopwr]

shiiiiiiet.

 

In that case, anyone know an aftermarket p/n?

 

to sit 4g63 7bolt evo motor. From memory all early 4g63 starter motors are the same?

Edited by evopwr, 06 November 2013 - 11:21 PM.

[EVL20T]

Ill say Alternator

[JayRome]

Hit your alternator with a mallet..... the carbon brushes might not be touching (or just replace the whole thing)

[jack be nimble]

If the light gets brighter with more lights on, and is brighter at idle, its probably brushes. They are reblaceable pretty easily, id just replace them.

If you can solder, they will set you back $10-$12.
If not you will need the holder as well.

I think you have to pull the back off alt to get them. Some have a brush holder that you just replace...

[Benzo4gT]

↑↑↑ What he said. If you have some dexterity you can do this without taking the alt out.

[VIN18M]

Did this on a charade once, it was pretty difficult to do on the car but a lot better than replacing the entire thing. Don't know about the 4g63s but on the one I did they had a small holder that screwed in to the inside of the alternator.

[Benzo4gT]

I have mine out so I thought I'd snap some pics that might help.

 

Pic 1 is the holder you need to take off.

 

Pic 2 is what you need to unclip to remove it from the housing so new brushes can be installed

 

Pic 3 These are where the brushes are soldered, a good soldering iron (60-80 watts) should melt the solder easily, just use some pliers and not your fingers when pulling them away  When you solder

 

in the new ones, make sure the little loops are clear of solder, you can open them up a bit to get the new brush wire in then just press them shut and put a bit of solder on them, not too much as you want

 

to avoid the solder wicking along the wire making it solid. 

 

Pic 4 This is what healthy-ish brushes look like, they are spring loaded to keep constant pressure with the commutator.

 

The last pic is of the commutator (or slip rings as some call them) 

 

Hope this helps

 

 

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Edited by Benzo4gT, 07 November 2013 - 07:29 AM.

[jack be nimble]

Good work benzo

[RicKii``]

the battery light comes on cos its telling you it cant get the power to your side indicators cos the cars too wide 

Edited by RicKii``, 07 November 2013 - 10:55 AM.

[licky]

I just replaced mine, pm me if you need a part number for it..

[evopwr]

haha Ricki!

 

Thanks guys, that's an awesome step-by-step guide. I think I may as well swap over for a new unit.

 

I remember reading on EVO-OOX build that a VR4 unit fits and also is of higher performance that the evo unit? Can anyone confirm? I'll be getting an aftermarket one, if anyone has Bursons/Repco parts numbers and indicative pricing please throw them up here!

 

Alex

[EVL20T]

An Auto RVR unit is 90amps, Rob got a 120 or 130amp from USA

 

VR4, EVO and manual RVR are all 70amp

[evo-gsr]

Pretty sure my Evo alternator is 90 amp and the GSR are the 70 amp jobs ?

[leadfoot]

yeah i've got a 90 amper on my gsr. and my spar is a 70