Voltmeter fluctuations?
10-25-05, 12:33 PM
#1
Strength & Unity
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Voltmeter fluctuations?
I know our cars are old, but is the fluctuation in the voltmeter normal. Everytime a turn something on the voltmeter drops to the line left of 12volts. Is this normal? Also when I have said stuff on, lights, heater, wipers and I press on the brake the tach bounces up and down just slightly. If everything is off it doesn't tach stays steady.
thanks for your help
thanks for your help
10-25-05, 12:39 PM
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Bad grounds and/or batter cables most likely.
I suggest running a good grounding kit and replacing your 20+ year old crappy battery cables.
You'll also want to give the battery posts a good cleaning while you have the cables off...
I suggest running a good grounding kit and replacing your 20+ year old crappy battery cables.
You'll also want to give the battery posts a good cleaning while you have the cables off...
10-26-05, 12:52 PM
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I have the same problem in my 85 SE. I'd also like to figure it out, I think I will check the grounds and cables later on today, The alternator is new though, so I don't think it is that.
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10-26-05, 10:58 PM
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Originally Posted by d0 Luck
upgrade to an S4 turboII for higher amperage. it will also be direct bolt on.
AMPERAGE IS NOT A WORD!!!
CURRENT is the word you want!!!
AAAAAAAAAAAAAAAAAAAHHHHHHHHHHHHHHHHHHHHHHHH!!!!!!! !!!!!!
... Sorry 'bout that, I had a physics teacher once, and the "amperage" was his pet peeve... I have a compulsive reflexive reation to the word now...
10-26-05, 11:04 PM
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putting on a higher rated alt. sounds more like a band-aid for the sitation. i'd guess you have a positive grounded somewhere, or a bad ground.... i have the same prob and have been trying to hunt it down forever!! arggh.. mega **** off. i feel your pain 
10-26-05, 11:36 PM
#10
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It could be the voltage regulator in the alt going. Probably a good idea to have it checked, but the other fixes mentioned are a good idea in any case...
10-27-05, 01:10 AM
#11
Originally Posted by smnc
Sorry, but I gotta say this:
AMPERAGE IS NOT A WORD!!!
CURRENT is the word you want!!!
AAAAAAAAAAAAAAAAAAAHHHHHHHHHHHHHHHHHHHHHHHH!!!!!!! !!!!!!
... Sorry 'bout that, I had a physics teacher once, and the "amperage" was his pet peeve... I have a compulsive reflexive reation to the word now...
AMPERAGE IS NOT A WORD!!!
CURRENT is the word you want!!!
AAAAAAAAAAAAAAAAAAAHHHHHHHHHHHHHHHHHHHHHHHH!!!!!!! !!!!!!
... Sorry 'bout that, I had a physics teacher once, and the "amperage" was his pet peeve... I have a compulsive reflexive reation to the word now...
the voltmeter fluctuations are common with first gen. alternators. by switching to a 2nd gen. n/a or t2, this usually solves it.
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