Re: [DML] Fuel Gauge Needle Drop Rate

["David Teitelbaum" <jtrealty@xxxxxxxxxxxxx>]

Fuel gauges in ANY car are not linear or accurate. It has to do with
the shape of the tank, the calibration of the sender and gauge, and
the voltage of the electrical system. The more accurate way to
determine fuel level is to know your "burn rate" and watch the trip
odometer. I reset it every time I fill up. You should be able to get
300 miles on a tank. So now if you see you have traveled 150 miles you
know you still have 1/2 tank of fuel or distance remaining of 150
miles (which is what you REALLY want to know anyway!). You can use the
fuel gauge as a cross/check. It should be close. If you use a fuel
burn (mpg) of 25 and you have a usable fuel capacity of 12 (leaves you
a little fudge factor) 25 X 12= 300. The automatic's fuel burn is
slightly more. If there is a lot of city driving or the car is heavily
loaded that will also increase the fuel burn (lower the MPG). Carrying
a lot of stuff on the luggage rack will also increase the fuel burn
significantly. These #'s only apply to a stock, well maintained
Delorean with a properly tuned engine.
David Teitelbaum
vin 10757


--- In dmcnews@xxxxxxxxxxxxxxx, aod80@... wrote:
>
> 
>  Shannon, 
> I have the same problem with my gauge/sender.  I'm even lucky if it
will go all the way full after I fill it up.  I don't know of anything
to fix it.  I've tried a couple of things short of dismantling the
sender.  I have a theory that it is because of the shape of our tanks.
 The fuel has less area towards the top and the level drops faster
until it gets to the 3/4 area where it acts normal.  Perhaps a
sender's sensors could be adjusted to accommodate this?  I'm not sure.
> 
> Adrian 
> #10674
> 
>   -------------- Original message from "Shannon" <birdwells@...>:
--------------
> 
> 
> 
>     
>             When I fill up the fuel gauge needle show full but after
just a few 
> miles it drops at a fast rate to about 3/4 of a tank. Then it seems to 
> drop at a normal rate. Does anyone else have this problem and can it be 
> fixed?
> 
> Shannon
> VIN 16113
> 
>               					  
> 
> [Non-text portions of this message have been removed]
>



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