[Shotimes] Fluctuating 12V power supply.

[Paul Nimz]

I would replace any blown fuse links with in line blade fuse holders.  That
way you can tell they are blown and are easily fixed.  They come in the
large maxi fuse type good for up to 60A and are under $6.00.  If you need an
even larger size run two in parallel.
http://shop.store.yahoo.com/delcity/maxifuseholder.html


Paul Nimz
'97 TR SHO
'93 EG mtx SHO


----- Original Message -----
From: "Herman Anker" <heranker@rogers.com>
To: <molsen@excite.com>
Cc: <shotimes@autox.team.net>
Sent: Sunday, January 05, 2003 11:55 AM
Subject: Re: [Shotimes] Fluctuating 12V power supply.


> BTW,  fuse links are built into the wire and more or less invisible..
Disconnect and measure those wires with an ohm meter. Spare Fuse links
(looks like a stupid wire with connector at each end) can be found in the
"HELP" isle. Also, 12V system voltage can be anything from 13-15V, all
depending on temp. Old style UDPs makes alternator not charge at idle, so
voltage reading between 10 and 12V is possible.
>
> hope this helps.
>
> Michael wrote:
>
> >  Trying one more time....
> >
> > I'm not an expert on car electronics, but I'm pretty sure something is
wrong in my cars power supply circuit. As I understand it, the voltage
supplied to, say, the headlights, is supposed to be 12V constant. And it is
the voltage regulator in the alternator that keeps the voltage constant.
> >
> > In my car however the voltage supply is always about 1V below the
battery voltage. Thus, the headlights and other components frequently see
voltage levels greater than 12V when the engine RPMs increase. And they see
less than 12V when the car is idling. This is not good.
> >
> > I have debugged the problem and found that the input to the voltage
regulator is floating. It's supposed to "see" the output voltage of the
alternator, but it doesn't since there's an open circuit on terminal A of
the voltage regulator. According to Helms I'm supposed to "Service Fuse Link
F". Makes sense that the fuse may have blown, right?
> >
> > The only thing is I'm not sure where Fuse Link F is. I have the EVTM
which shows the vicinity of where Fuse Link F is supposed to be. And I think
I found it (since one of the wires has the same color as the A terminal on
the alternators regulator connector).
> >
> > However, when I disconnect this connector, I don't see any fuse. Can
someone help?
> >
> > ---Michael
> >
> > 94MTX,green,BOS+ --- On Fri 01/03, Michael  wrote:From: Michael [mailto:
molsen@excite.com]To: shotimes@autox.team.netDate: Fri,  3 Jan 2003
11:31:44 -0500 (EST)Subject: [Shotimes] (no subject) I'm not an expert on
car electronics, but I'm pretty sure something is wrong in my cars power
supply circuit. As I understand it, the voltage supplied to, say, the
headlights, is supposed to be 12V constant. And it is the voltage regulator
in the alternator that keeps the voltage constant.In my car however the
voltage supply is always about 1V below the battery voltage. Thus, the
headlights and other components frequently see voltage levels greater than
12V when the engine RPMs increase. And they see Join Excite! -
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>
____________________________________________________________________________
___
>
> '95 ATX  ~137 000 km
> Mods&Service page: http://hanker.tripod.com/sho.htm
> Ontario SHO enthusiast club: http://www.shopower.com/
> High tech Automotive lighting faq: http://faq.auto.light.tripod.com
>
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