Could it just be the difference between gauges for the "Analog Clock"
cluster and the ones for the "Tach equipped cluster"?

Mike

John Bange wrote:
> On 7/29/06, Larry Alofs <lalofs@rcn.com> wrote:
>
>>
>> I don't know if it will help for those involved with the current fuel
>> gauge thread, but it seems like this data should be in the archives; I
>> could not find it in my Bentley.
>>
>> I took the gas tank out of my "91 GL recently to replace the grommets
>> and for future reference measured the resistance of the level sensor.
>>
>> With the empty tank upside down so that the float was in the "full"
>> position, the sender measured a reliable 35 ohms.
>>
>> With it right side up, the "empty" position, the minimum consistent
>> resistance was 450 ohms.
>>
>
> Looking through the Bentley I notice there are two sets of test values for
> the VW1301 for testing the fuel gauge. One set is under [1980-1984] and
> shows 55=full, 560=empty (equaling 38 and 392 ohms, respectively). The
> other
> is under [Water-cooled from 1985] and shows 50=full, 320=empty (35 and 210
> ohms).
>
> Then, looking through the ETKA section on fuel senders, I see there's a 251
> 919 051 E wit a note saying ">> 25-H-082 433", and a 251 919 051 K with a
> note saying "25-H-082 434>>". If these are VINs, I guess that would
> indicate
> they changed something in the middle of the '87 model year? It must have
> been only a mounting or electrical connector change, though, as I see only
> two models of fuel gauge (251 919 031 or 031A) for all of 1980-1992.
>
> Anyone got a theory on why Bentley shows two different ohm ranges for
> testing supposedly the same gauge?
>
> --
> John Bange
> '90 Vanagon - "Geldsauger"
>