fuel gauge only reads 3/4 fuel sender problems

["Kerry Pinkerton" <pinkertonk@xxxxxxxxx>]

Don't know about what the electrolucent stuff does to the testing technique.
I'm not a EE but I expect Dick B will chime in with the facts.

KerryP
Patch panels fabricated
Pinkertonk@xxxxxxxxx
dte.net/57imperial
Imperials -- 50 Limo, 57 roadster, 61's, 64, 68 Convert, 73, a 66 300 and a
bunch of lesser marques
----- Original Message -----
From: david munson <davidmunson30@xxxxxxxxxxx>
To: <mailing-list@xxxxxxxxxxxxxxxx>
Sent: Sunday, March 02, 2003 4:34 PM
Subject: Re: IML: fuel gauge only reads 3/4 fuel sender problems


> Dear all
> Am I right or am I wrong but my car has electroluminescent dash lights
(63)
> I have been told that you should not ground the sender wire to see if the
> gauge works is this correct or not and if so how does one check these
> gauges, I put in a "new" sender unit which briefly gave a 3/4 reading
before
> slowly dying as did the previous gauge.????????????.
>
>                             David Munson
>
>
>
>
>
>
> >From: "Kerry Pinkerton" <pinkertonk@xxxxxxxxx>
> >Reply-To: mailing-list@xxxxxxxxxxxxxxxx
> >To: <mailing-list@xxxxxxxxxxxxxxxx>
> >Subject: Re: IML: fuel gauge only reads 3/4
> >Date: Sat, 1 Mar 2003 20:47:57 -0600
> >
> >  If you disconnect the lead from the fuel tank and ground it while the
key
> >is on, your guage should read full.  If it doesn't, your guage is bad.
If
> >it does, your sending unit has a problem.  I use a couple long jumper
wires
> >with alligator clips on the ends and go directly from the battery ground.
> >That way I can hook up to the battery ground, the sending unit lead and
> >touch them together while I'm in the car so I can see the guage.
Othersize
> >it takes two people.
> >
> >KerryP
> >Patch panels fabricated
> >Pinkertonk@xxxxxxxxx
> >dte.net/57imperial
> >Imperials -- 50 Limo, 57 roadster, 61's, 64, 68 Convert, 73, a 66 300 and
a
> >bunch of lesser marques
> >----- Original Message -----
> >From: Roger Farrar <tenpalms@xxxxxxx>
> >To: <mailing-list@xxxxxxxxxxxxxxxx>
> >Sent: Saturday, March 01, 2003 8:13 PM
> >Subject: Re: IML: fuel gauge only reads 3/4
> >
> >
> > > <<<<<<<<<<<Where is the fuel sending unit at?  When i fill up my tank
it
> > > says I only
> > > have a 3/4 of a tank, so I have to do somthing to the sending unit.
and
> > > suggestions?
> > > Thanks,
> > > Kevin Pacheco
> > > 71 IMPERIAL>>>>>>>>>
> > >
> > > Before repairing or replacing the tank
> > > sending unit, clean and tighten all the connections in the circuit.
Any
> >iffy
> > > connections can introduce enough resistance into the circuit to change
> >the
> > > calibration. The most likely connections to be cruddy are the one at
the
> > > tank sender or the connector plug(s)
> > > in the wiring to the rear of the car.
> > > regards
> > > Michael
> > >
> > > Roger and Michael in San Diego
> > > 67 Crown Convertible  "Moby"
> > > 73 LeBaron Coupe  "La Bomba Negra"
> > > 56 Sedan
> > >
> > >
> > >
> > >
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> >
> >
> >