1993 Spider Veloce Voltage Regulator - Battery Charging - Alfa Romeo Bulletin Board & Forums
 
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post #1 of 5 (permalink) Old 08-13-2019, 03:37 PM Thread Starter
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1993 Spider Veloce Voltage Regulator - Battery Charging

I started to have battery charging issues this season.
Difficult to start without a charge.
Charged the battery then OK to start the first couple of outings.
Then the car sat for a few weeks (always sits with the battery disconnected) and then went to start the car but would not start without the battery being charged.
We went on a short trip of about 40 miles round trip. Started OK each time. The battery indicator on the dash was not lit.
Car sat again for 3 weeks and this time it started the first time, but then I shut if off about 3 minutes later and it would not restart.
I charged the battery for about 2 hours but it would not get to full charge.
I boosted the battery with a spare and it started.
The battery indicator on the dash was not lit.
I hooked up the voltmeter and had readings of 13.6, .7, .8, .9 as I revved the engine.
The battery is 3 years old and is an Interstate. The car is kept indoors all the time with the battery disconnected when parked.

The forum threads make reference to the alternator and the voltage regulator as probable causes.

I started with the easier of the two and removed the voltage regulator. The brushes are worn unevenly as can be seen in the photos.
The voltage regulator has the following information:
TRANSPO-CN
I8353-0531-12V

I would like to know if I am on the right path for the charging issue, or if the uneven wear of the voltage regulator is simply another unrelated problem.

Thanks for your help.
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1973 Alfa Romeo Spider Junior (Euro) 1300
1993 Alfa Romeo Spider Veloce
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post #2 of 5 (permalink) Old 08-13-2019, 10:42 PM Thread Starter
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I would also like to know if anyone has found an equivalent part to the original Bosch voltage regulator.

Thanks

1973 Alfa Romeo Spider Junior (Euro) 1300
1993 Alfa Romeo Spider Veloce
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post #3 of 5 (permalink) Old 08-14-2019, 08:30 AM
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I changed the same voltage regulator on a 1981 Spider which solved the issue.
My local auto electric shop sourced this out for me.

Anthony
72 GTV, 72 GTV (Sold), 74 Berlina (Project), 72 Spider (Sold), 76 Spider (Sold), 70 GTJ
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post #4 of 5 (permalink) Old 08-14-2019, 08:55 AM
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I'd replace that regulator regardless. Try Rock Auto, they probably have Bosch but if not will have suitable replacements.

Tom

1963 Giulia Spider (1750 engine)
1974 GTV
1991 Spider
Former: 1987 Milano Gold
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post #5 of 5 (permalink) Old 08-14-2019, 09:40 AM Thread Starter
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Thanks for the replies.

I took off the alternator and could see that the rotor shaft where it contacts with the brushes was quite marked. As I was concerned about the overall condition of the alternator, I decided to order a complete remanufactured REMY 14907.

I will update once everything has been re-tested after the installation of the new alternator.

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1993 Alfa Romeo Spider Veloce
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