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Re: Re: Fuel gauge problems
Tom Nas <email@example.com> wrote:
"Renier Meyer" <RMeyer.firstname.lastname@example.org> wrote:
>Replaced the fuel pump very carefully myself (4 times) only to have
>the fuel guage stick at 3/4 or 1/3 and did not want to move below on
>the one and above on the other.
>The trick to this job is: The fuel pump fits only in one orientation,
>which allows free movement of the float guage sender unit. On the
>200T range you have to line the pump outer up with a mark on the
>plastic screwed to the chassis (or on the tank itself).
>(Trunk mounted tank, mark towards the
>car's interior on the right hand side).
I expect this trick not to work for the 90- does anyone know how to get my
90's new fuel gauge to read over 3/4?
You need to get a 51 ohm resistor (if I recall correctly) and connect it
across the connector at the top of the gas tank in the trunk (boot). This
is with the connector disconnected from the gas level sensor in the tank.
The needle in the gauge in the dashboard should point to the thicker line
about 5mm above empty (I'm not where my Bentley is, so if this is too
ambiguous for anyone, I'll look it up and be more explicit.) The gauge is
then set via the plastic rod by the gauge that doesn't quite protrude from
the dash clear plastic window. Use needlenose pliers to pull the cap and
then a tiny Phillips screwdriver to rotate the rod. If after this a full
tank doesn't show full, either your tank sensor is defective, or the voltage
regulator in the dash is defective. With the sensor connector disconnected
and without the 51 ohm resistor, the gauge should show full, I think.
.... Kirby (Kirby A. Smith)
2 x 1988 90q
New Hampshire USA