Alternator issue... Need advice please...

MajikFungi

Hi All,

Would like some advice if possible please...

My battery went flat.. Crying or Very sad

so i recharged it (over charged a bit )

Image may have been reduced in size. Click image to view fullscreen.

My Gen / Alt light is not lighting up when I turn the ignition on

I earthed the wire coming from the Gen / Alt light with ignition on/engine off
just long enough to check if the light works and it does.

D+ on the Alt is connected through the indicator light to the ignition.
B+ I connected straight to the + terminal on the battery ( can I do that? )

the 75a alternator is 8 months old and this is my first flat battery since installed. Purchased from California Import Parts.

I thought I could test the volts coming out of the Alternator so I disconnected the alt from the battery and connected the Wire from b+ terminal up a multi meter so it would only show the output of the alternator..

This is idling

This is keeping the revs up

So as far as I know... Its providing a charge? right?

Well I am lost and really don't want to spend another $150 on a new Alternator..

Please someone point me in the right direction...

Any advice would be greatly appreciated Laughing

..
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VDubTech · Posted: Sun Aug 17, 2014 6:46 am Post subject:

How many shitty chinese parts can you stick on one engine?
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kreemoweet · Posted: Sun Aug 17, 2014 9:58 am Post subject:

So this is an alt with an internal regulator and the generator regulator in the back corner of the engine comp. is disconnected, right?

FYI, running an alt with it disconnected from the battery can easily destroy the alt, the regulator, or both. There is no valid test
of an alternator like that, your readings there are meaningless.

See your Bentley manual for proper alt/reg tests you can make.
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Brian · Posted: Sun Aug 17, 2014 10:34 am Post subject:

Make sure all the wiring on the dash is solid. It wont charge if the idiot light isn't working.

Wildthings · Samba Member Joined: March 13, 2005 Posts: 50331

Your alternator looks to be shot, though maybe it could just be the regulator. Buy with care from CIP1/CIP2. New parts fail, they always have, but sadly even if you buy Bosch you are likely only getting third world quality parts.

I have to agree with VdubTech. Adding cheezy crap to your engine just increases the likelyhood of problems.

MajikFungi · Posted: Mon Aug 18, 2014 2:21 am Post subject:

MajikFungi · Posted: Mon Aug 18, 2014 2:25 am Post subject:

MajikFungi · Posted: Mon Aug 18, 2014 2:29 am Post subject:

MajikFungi · Posted: Mon Aug 18, 2014 2:33 am Post subject:

Jody '71 · Posted: Mon Aug 18, 2014 2:48 am Post subject:

so, was the dash light working properly before the battery went dead? If it wasn't then your circuit wasn't complete and charging wasn't happening, thus your battery went dead.
If it was working properly and your battery went dead then your alternator either roached out or the internal regulator or both. How old is the battery? Old batteries lose their ability to hold a charge at the end of their lives..
Looks like there is a large gap in your rear tin under the disbt. Take a closer pic of that and post. I may be seeing things wrong however. That dial-o-matic fuel pressure regulator is a no bueno. You don't need one at all if you get an electric pump that's pre-set to like 3 lbs. of pressure.
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MajikFungi · Posted: Mon Aug 18, 2014 2:57 am Post subject:

MajikFungi · Posted: Mon Aug 18, 2014 3:16 am Post subject:

MajikFungi · Posted: Mon Aug 18, 2014 3:46 am Post subject:

lightice · Samba Member Joined: December 14, 2012 Posts: 599

If you need to change, try BNR parts on ebay. They remanufacture alternators and some here have used them.

williamM · Posted: Mon Aug 18, 2014 3:49 am Post subject:

looking at those numbers reminds me of when I lost a diode in mine. Any flaps can test it running in your car. (If they know how.)

Is that a 1/4 mile go like hell power pulley on your low rpm city driving bus?
Bet it runs hot during the summer?
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MajikFungi · Posted: Mon Aug 18, 2014 3:59 am Post subject:

MajikFungi · Posted: Mon Aug 18, 2014 4:01 am Post subject:

williamM · Posted: Mon Aug 18, 2014 8:42 am Post subject:

You should be able to get a nice pulley with mor diameter and number- they fall out of trees round here. (I live in the desert- so- take that into consideration) Laughing

_________________
some days I get up and just sit and think. Some days I just sit.

opinion untempered by fact is ignorance.

Don't step in any!

SGKent · Posted: Mon Aug 18, 2014 8:52 am Post subject:

you are going to get stranded or worse hanging all that weight off a tee like that.

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Jody '71 · Posted: Mon Aug 18, 2014 11:38 am Post subject:

I agree with SGKent. Take that tee off (it serves no purpose) and put your OP sender back where it belongs. I can see why it's running hot with all that chrome aftermarket stuff on there. Replace it now with original German tin or replace it all later when your engine fries.
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'66 Beetle
2011 Hyundai Elantra Touring


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Alternator issue... Need advice please...
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