[Healeys] Fuel Gauge Problem - Continued

[Len and/or Marge Hartnett]

Rick:  I didn't get into the voltage, resistance, calibrate phase of 
adjusting my fuel sender/gauge readings.  I just bent the float arm until I 
had a very close approximation on the 'empty' end of the scale.  The only 
thing that was important to me was to know when I would run out of gasoline 
(before it happened, Ed).  As insurance, if in doubt, I also carry a dip 
stick in the trunk.

(The Other) Len
Vacaville, CA, USA
1967 AH 3000 MkIII, HBJ8L39031


----- Original Message ----- 
From: "Rick Huber" <hubrick at gmail.com>
To: <healeys at autox.team.net>
Sent: Sunday, January 16, 2011 10:04 AM
Subject: [Healeys] Fuel Gauge Problem - Continued


> Sorry, don't know how the last message got sent, somebody must have hit
> something on the keyboard.
>
> Problem - tank reads 5/8 full when empty and needle is out of sight past
> full when full.
>
> Troubleshooting.  With tank full, voltage at Battery side of gauge is 12 
> v,
> Tank side is 1.6 v.  Resistance across gauge is 62 ohms when completely
> disconnected.
>                          With tank empty (out of gas), voltage at sending
> unit is 7 v.
>                          With sending unit out of tank, resistance at full
> down position is 85 ohms, voltage when grounded is 7 v, gauge reads 5/8
> full.
>
> resistance at full up position is 1.5 ohms, voltage when grounded is 0.5 
> v,
> gauge reads out of sight past full.
>
> Anybody know what's wrong?
>
> Cheers,
> Rick
> 64 BJ8 Phase I
> _______________________________________________