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[Roadsters] Gauge voltage regulator troubles.... VR bench tests,

To: datsun-roadsters@autox.team.net
Subject: [Roadsters] Gauge voltage regulator troubles.... VR bench tests,
From: D Riedel <stamuki@gmail.com>
Date: Wed, 22 Jul 2009 17:32:12 -0700
I cleaned up my gauge voltage reg and re-installed it.  This gave me a
credible gas reading, and no temp (but I was sitting in the driveway
not running).  So, I went for drive to warm the engine and fill the
tank.  The temp may have risen a little but it stayed below the lowest
line.  I then filled the tank and it didn't change the fuel reading
(just under 1/4).

So, I bench tested the VR and it seems fine:  Starts at source
voltage, holds for a few seconds then pulses between ~0V and 10.5V
(where I had the power supply set).

Put it back in the car, tried it backwards to confirm that wasn't the
problem.  OK.

I then bypassed the VR by simply pushing the ignition and gauge leads
together: no movement from temp, fuel rose to about 60% full then held
there.

Any ideas what this is telling me?  I would appear that the
temperature gauge itself may be dead, but why the partial operation of
the fuel gauge with a seemingly functioning voltage reg?



-- 
Dave Riedel
'69 2000
Victoria, BC
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