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Author Topic: Voltmeter Misbehaving  (Read 3265 times)
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BetaSteve
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« on: May 30, 2011, 01:10:22 PM »

The voltmeter in the instrument cluster (top left) has recently started behaving oddly. From it's normal position roughly in the middle, the indicator shoots across to the far right (excess +ve), accompanied by some odd clicks audible through the radio, then comes back to the normal position after a few minutes.

I'd be interested if anyone's comes across this before, and if it is early indication of a likely problem with the alternator ?

Cheers
Steve
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MattNoVAT
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« Reply #1 on: May 30, 2011, 01:23:04 PM »

Possibly the voltage regulator on the alternator it on its way out?  IIRC these can be replaced without changing the whole alternator.
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1981 2000 Coupe S2/FL
1976 1600 Coupe S1
2007 Ypsilon 1.3 Bi-Colori
Lancia Beta 2000
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« Reply #2 on: June 01, 2011, 07:52:45 PM »

What brand is your voltage regulator?
bosch or marelli?
Have you measured the DC with a multimeter accross the battery, with engine on?
« Last Edit: June 01, 2011, 08:04:39 PM by Lancia Beta 2000 » Logged
MattNoVAT
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« Reply #3 on: June 01, 2011, 09:39:33 PM »

Steve

I'll try this tomorrow and post up the results, I cant recall which is fitted to my red coupe.  I also have a spare in the garage so will check the maker and whether the regulator can be replaced and if there are any p/n's
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1981 2000 Coupe S2/FL
1976 1600 Coupe S1
2007 Ypsilon 1.3 Bi-Colori
MattNoVAT
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« Reply #4 on: June 05, 2011, 10:39:06 AM »

Steve,
Apologies but things got a tad busy at home, I did not get a chance to test my alternator for you. 

I'm away from my car now for a couple of weeks so maybe one of the other members can assist?
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1981 2000 Coupe S2/FL
1976 1600 Coupe S1
2007 Ypsilon 1.3 Bi-Colori
MattNoVAT
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« Reply #5 on: June 05, 2011, 10:44:46 AM »

There are plenty of people on fleabay, in the past I have used VEHICLEELECTRICSLTD for regulators.  Just search eBay or look at item number:  300281182015
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1981 2000 Coupe S2/FL
1976 1600 Coupe S1
2007 Ypsilon 1.3 Bi-Colori
BetaSteve
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« Reply #6 on: July 03, 2011, 01:35:06 PM »

Thanks all for the suggestions and help with this, all sorted now. Turned out to be a combination of:
1. Faulty battery; not helped by:
2. Low output from the alternator (13v), so the battery was not being charged during trips; and:
3. Dodgy earth connection to the voltmeter.

I now have a new battery, recondition alternator, a good earth, and one of those ctek 'smart' chargers to try and keep it good condition.

Cheers
Steve
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