Alternator Problems

Talk about the E-Type Series 3
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panamacarrera
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Location: Southport, UK
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#1 Alternator Problems

Post by panamacarrera » Tue Oct 15, 2019 3:02 pm

Hi All

I'm having problems with the charging system on my S3.

The engine has been out for the last 18 mths, charging system was working fine before engine removal but now everything is back together- nothing but the red warning light.

From the below post I've tested all the prescribed links and everything has good connections.

There's good battery voltage at the alternator B terminal

Just 2v across the control box +ve and -ve terminals...?

I'm stuck. Has anybody ant suggestions for a next step, or do I just give up and visit an autoelecrician?

Thanks guys

Nigel


http://forum.etypeuk.com/viewtopic.php? ... or#p118838
'71 S3 OTS

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driver
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#2 Re: Alternator Problems

Post by driver » Tue Oct 15, 2019 4:56 pm

Hi
Unless you want to keep everything original, why not just fit a modern alternator.
very easy to fit and no problems constantly checking and vetting old components.
After doing all the other jobs on the car I just decided I just wanted to just to drive and enjoy the car and this seemed the easy option. :swerve: :drinkingcheers:
All the best Rob Gill.
v12 etype 2+2

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panamacarrera
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#3 Re: Alternator Problems

Post by panamacarrera » Wed Oct 16, 2019 6:56 am

Thanks Rob, a good suggestion but all through the work I've done on the car I've gone for originality and don't plan to change now.

Thanks again

Nigel
'71 S3 OTS

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driver
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#4 Re: Alternator Problems

Post by driver » Wed Oct 16, 2019 7:11 pm

Ok, I take your point but after 1500 hours input and a change of working circumstances (new business venture)
I just want to jump in and cruise! :bigrin: i have kept all the original parts though.
All the best Rob :P
v12 etype 2+2

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Ole-xke1974
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#5 Re: Alternator Problems

Post by Ole-xke1974 » Sat Oct 19, 2019 11:34 am

You might want to charge some suspicious connections, especially the low current ones like the brush connections on the generator itself.
FYI, I have a low glowing charge (ign) light even when the voltmeter is indicating 14 volt on the battery (verified with a Fluke DVM)
Cheers ....... Ole
1974 SIII E-Type w. XJ S2 4sp w. O/D

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panamacarrera
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#6 Re: Alternator Problems

Post by panamacarrera » Mon Oct 21, 2019 8:28 pm

Sorted!

In the end I went to a local auto electrician who checked everything, cleaned the brushes and adjusted the earth connection through the cable holder and hay presto everything is working fine.

Thanks to all for your contributions.

Cheers

Nigel
'71 S3 OTS

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#7 Re: Alternator Problems

Post by Ole-xke1974 » Mon Oct 21, 2019 11:18 pm

Good news. Thanks for the heads up .......... Ole
1974 SIII E-Type w. XJ S2 4sp w. O/D

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