Re: [DeTomaso] Tank gauge

[Thomas Tornblom <Thomas.Tornblom@Hax.SE>]

> Thread-Index: AcL/vEVKvozo2hx7QvOiR7FYPqoFsA==
> From: "prolan1" <prolan1@pacbell.net>
> To: "Thomas Tornblom" <Thomas.Tornblom@Hax.SE>, <detomaso@realbig.com>, 
<detomaso@detomaso.nu>
> Subject: Re: [DeTomaso] Tank gauge
> Date: Thu, 10 Apr 2003 16:52:38 -0700
> content-class: urn:content-classes:message
> 
> autometer makes the following:
> 
> 
> 
> part number = 2-1/16" 2-5/8"  Fuel Level (0 ohm empty/ 90 ohm full)
>       For most GM vehicles from 1965 to present.
>       3314 3514

But this won't work with the OEM sender.

At full tank the gauge will show empty and at half tank it will show full. 
The's even worse than using a German VDO which will show full when empty and 
empty when full.

Thomas

> 
> 
> 
> Crash Test Dumba$$
> prolan1@pacbell.net
> www.jacobsracing.com/dd
> ----- Original Message -----
> From: "Thomas Tornblom" <Thomas.Tornblom@Hax.SE>
> To: <detomaso@realbig.com>; <detomaso@detomaso.nu>
> Sent: Thursday, April 10, 2003 12:56 PM
> Subject: [DeTomaso] Tank gauge
> 
> 
> > In my quest to get properly working instruments, I have spent a few hours
> > measuring the tank sender resistance and noticing the gauge reading for
> various
> > amounts of fuel.
> >
> > As I still have the car on jackstands, it was quite easy to drain the tank
> so
> > that I knew the exact amount of fuel for each measurement.
> >
> > I added 5 liters at a time, noticing the gauge reading and resistance.
> >
> > Here's what I found:
> >
> > liters R (ohm) gauge
> > ---------------------
> > empty ~2k empty--
> > 5 321 empty-
> > 10 272 empty+ lamp goes out
> > 15 234 1/16
> > 20 208 1/8+
> > 25 180 1/4-
> > 30 160 1/4+
> > 35 135 3/8
> > 40 115 1/2-
> > 45 100 1/2+
> > 50 88 9/16-
> > 55 75 3/4-
> > 60 60 3/4
> > 65 48 3/4+
> > 70 27 4/4-
> > 75   3 4/4+
> > 80   2.5 4/4+
> >
> > When I filled the last few deciliters up to 80 liters, the fuel level
> climbed up
> > into the filler tube, but sank slowly as if something was leaking. I
> believe the
> > excess fuel drained into the carbon canister. I have a late aluminum tank
> by the
> > way.
> >
> > All gauge readings were taken with the ignition on, a battery charger
> active, no
> > lights on.
> >
> > For those (like me) contemplating replacing the instruments with better
> working
> > VDO:s, VDO North America has a fuel gauge in all common series that
> probably
> > would work fine. They have a gauge with 240 ohm (empty) - 33 ohm (full),
> and
> > adding a ~30 ohm resistor in series with the sender would probably work
> > reasonably well.
> >
> > This type of gauge is not available from VDO Germany. The German gauges
> are
> > either 3 ohms empty and 180 ohms full (opposite from veglia) or 60-90
> > (adjustable) empty and 0.5 ohms full.
> >
> > I will get one of the 240-33 gauges from Summit and try it out with the
> stock
> > sender.
> >
> > Cheers,
> > Thomas
> >
> > _______________________________________________
> > DeTomaso mailing list
> > DeTomaso@realbig.com
> > http://realbig.com/mailman/listinfo/detomaso
> 
> 
> 
> - - - - - - - Appended by PowerTV, Inc. - - - - - - - 
> This e-mail and any attachments may contain information that is confidential, 
proprietary, privileged or otherwise protected by law. The information is 
solely intended for the named addressee (or a person responsible for delivering 
it to the addressee). If you are not the intended recipient of this message, 
you are not authorized to read, print, retain, copy or disseminate this message 
or any part of it. If you have received this e-mail in error, please notify the 
sender immediately by return e-mail and delete it from your computer.
> 

Real life:      Thomas Törnblom             Email:  Thomas.Tornblom@Hax.SE
Snail mail:     HB Hax                      Phone:    +46  18 290 290
                Banvallsvägen 14            Fax:      +46  18 290 291
                S - 754 40 Uppsala, Sweden  Cellular: +46  70 261 1372