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Re: [T3] Voltage regulator


On 3 Sep 98, at 10:32, oofacts@earthlink.net wrote:

> So my Voltage Regulator is making a zany clicking sound and my radio is
> barely coming in. I suppose this means time to replace the VR, but what I'm
> wondering is whether this is something that can be fixed once I install my
> new VR and whether this is symptomatic of a larger invisible 
problem.

I can't say if your radio problem is related, but a VR that is making 
irregular clicking sounds is probably dying.  The real test is to 
measure what the regulating voltage is.  Do it this way:

Drive the car to get everything charged up to equlibrium.  Park, but 
don't shut off the engine.  Connect a voltmeter across the battery 
and measure the voltage.  Watch the voltage rise as you speed up the 
engine; the voltage will rise and then level off.  The voltage that 
it levels off at is the regulating voltage.

If the voltage is 14.1-14.4 V then this is like new.
If the voltage is 13.5-14.1 V then it is dying or marginal.
If the voltage is less than 13.5 V you should replace the VR.

I recommend genuine Bosch.  I stock these along with a special 
version that I have modified for better life.  I have not yet 
developed my electronic version.

Jim
-
*******************************
Jim Adney, jadney@vwtype3.org
Madison, Wisconsin, USA
*******************************

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