fuel pump PONTIAC BONNEVILLE 1997 Owners Manual

Here are some things that some owners ask about. None
of these show a problem with your fuel gage:
At the service station, the gas pump shuts off before
It takes a little more or less fuel to fill up than the
the
gage reads
FULL (F).
gage indicated. For example, the gage may have
indicated the tank was
half full, but it actually took a
little more or less than half the tank's capacity to fill
the tank.
The gage moves a little when you turn a corner,
The gage doesn't go back to EMPTY (E) when you
0 If you have the large span (220") gage, the needle
moves
more for a given amount of fuel. This does
not indicate excessive fuel consumption, and
is normal.
speed
up, or make
a hard stop.
turn off the ignition.
Boost Gage (Option)
msT -10
Vehicles equipped with the supercharged engine have
this boost gage that indicates vacuum during light to
moderate throttle an'd boost under heavier throttle. The
gage displays
the air pressure level in psi going into the
engine's combustion chamber.
The gage is automatically centered at zero psi every
time the engine is started. Actual vacuum or boost is
displayed from this zero point. Changes in ambient
pressure, such as driving in mountains and changing
weather, will slightly change the zero reading.
2-76
ProCarManuals.com

Supercharged Engine (Option)
Your Bonneville may have a 3800 Supercharged engine.
The supercharger is a device which is designed to pump
more air into the engine than
it would normally use.
This air mixed with fuel, creates increased engine
power. Since the supercharger is a pump and is driven
from an engine accessory drive belt, increased pressure
is available in all driving conditions.
The Powertrain Control Module (PCM) works with
a vacuum control to regulate the increased pressure
required during specific driving conditions. When this
increased pressure or boost
is not desired, such as during
idling and light throttle cruising, the excess air that the
supercharger is pumping is routed through a bypass.
AI1 of these controls working together provide high
performance character and fuel efficiency in the
3800 V6 Supercharged engine.
Engine Oil
CHECK OIL
LEVEL
If the CHECK OIL LEVEL
light on the instrument panel
comes on, it means you need
to check your engine
oil
level right away. For more
information, see “Check
Oil
Level Light’’ in the Index.
You should check your
engine
oil level regularly;
this is
an added rerninder.
It’s a good idea to check your engine oil every time you
get
fuel. In order to get an accurate reading, the oil must
be warm and the vehicle must be on level ground.
6-13
ProCarManuals.com

r---------l I FUSE I I POSITIONS I
0
nu
Fuse
1
2
3
4
5
6
7
8
9
10
11
12
Usage
Door Locks
Trunk Release, UC
Horns
Not Used
Miscellaneous Engines Controls
(OBD
11)
Fuel Pump
Injectors
Powertrain Control Module
Not Used
Not Used
A/C Programmer
Not Used
ProCarManuals.com