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Re: voltage fluctuations only at idle
[Re: Andrewh]
#679214
04/24/10 11:12 PM
04/24/10 11:12 PM
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Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
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Alt. I'd pull/check/clean the brushes. Easy/quick to do
live every 24 hour block of time like it's your last day on earth
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Re: voltage fluctuations only at idle
[Re: Andrewh]
#679215
04/25/10 09:09 AM
04/25/10 09:09 AM
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Joined: Sep 2007
Posts: 14,889
up yours
Supercuda
About to go away
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About to go away
Joined: Sep 2007
Posts: 14,889
up yours
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The voltage sense line you mention picks it's voltage from the battery, via the key switch. If that line is dirty then it'll sense lower voltage and up the alternator output.
Not sure how the electronic version of the older style regulator works, but the mechanical version is really just a switch turning the alternator on/off/on/off to maintain battery voltage. If the elctronic version does the same thing then it's operating normal. The mechinical style is adjustable as well, not sure if the electronic version is.
The newer style regulator (70 and up) varies the output of the alternator in a linear fashion, not the on/off/on/off method the old style uses. You can update to that style easily enough, NAPA sells the connectors for cheap.
They say there are no such thing as a stupid question.
They say there is always the exception that proves the rule.
Don't be the exception.
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Re: voltage fluctuations only at idle
[Re: Andrewh]
#679218
04/25/10 02:44 PM
04/25/10 02:44 PM
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Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
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Stumpy mentioned something I want to do, spraying the alt w something to clean it which sounds like it would clean the commutator bars/brushes as that is the make/brake connection point inside of it as long as you didn't wash the bearings/lube on each end
live every 24 hour block of time like it's your last day on earth
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Re: voltage fluctuations only at idle
[Re: Supercuda]
#679219
04/25/10 06:38 PM
04/25/10 06:38 PM
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Joined: Feb 2003
Posts: 8,675
Andrewh
OP
master
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OP
master
Joined: Feb 2003
Posts: 8,675
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Quote:
The voltage sense line you mention picks it's voltage from the battery, via the key switch. If that line is dirty then it'll sense lower voltage and up the alternator output.
Not sure how the electronic version of the older style regulator works, but the mechanical version is really just a switch turning the alternator on/off/on/off to maintain battery voltage. If the elctronic version does the same thing then it's operating normal. The mechinical style is adjustable as well, not sure if the electronic version is.
The newer style regulator (70 and up) varies the output of the alternator in a linear fashion, not the on/off/on/off method the old style uses. You can update to that style easily enough, NAPA sells the connectors for cheap.
I don't think this is how it works. If it did, I would think I would get the same pulses higher up in rpm just like the instrument vr. but not sure.
I might try spraying it first, but will still take apart the spare to see what is involved.
Well spare is the wrong word, since it can't be used. accidently broke the main stud off of it.
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