1994 PONTIAC FIREBIRD fuel pump

Features and Controls
Fuel Gage
four fuel gage shows about how much
bel is in your tank. The fuel gage works
mly when the ignition switch is in the
‘Run” position. When the gage pointer
‘Irst indicates
“E,” you still have a little
uel left (about one to two gallons), but
IOU need to get more right away.
3ere are four concerns some owners
lave had about the fuel gage. All these
iituations are normal and do not indicate
:hat anything is wrong with the fuel gage.
,..go
At the gas station, the gas pump shuts
off before the gage reads “E”
It takes more (or less) gas to fill up
than the gage reads. For example, the
gage reads
1/2 full, but it took more
(or less) than half of the tank’s
capacity to fill it.
The gage moves
a little when you
turn, stop or speed up.
When you turn the engine
off, the
gage doesn’t go back to
“E.”
Brake System Warning Light
Your Pontiac’s hydraulic brake system is
divided into two parts. If one part isn’t
working, the
other part can still work and
stop you. For good braking, though, you
need both pws working well.
If the warning light comes on, there could
be a brake problem. Have your brake
system inspected right away.
This light should come on as you start the
vehicle. If it doesn’t come on then, have
it
fixed so it will be ready to warn you if
there’s a problem.
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H Fuel
The 8th digit of your Vehicle
Identification Number (VIN) shows
the code letter for your engine.
You will
find the VIN at the top left of your
instrument panel. (See “Vehicle
Identification Number” in the Index.)
3.4L L32 (Code S)
Use regular unleaded gasoline rated at 87 octane or higher. It should meet
specifications ASTM D4814 in the
U.S.
and CGSB 3.5-92 in Canada. These fuels
should have the proper additives,
so you
should not have
to add anything to: the
fuel.
In the U.S. and Canada, it’s easy to be sure you get the right kind of giisoline
(unleaded). You’ll see “UNLEADED”
right on the pump. And only unleaded nozzles will fit into your vehicle’s filler
neck.
’ Be sure the posted octane is at least 87.
If the octane is less than 87, you may get
a heavy knochng noise when
you drive.
If it’s bad enough, it can damage your
1 engine. If
you’re using fuel rated at 87 octane or
higher and you still hear heavy knoclung,
your engine needs service. But don’t
worry if you hear a little pinging noise
when you’re accelerating or driving up a
hill. That’s normal, and you don’t have to
buy a higher octane fuel to get rid of
pinging. It’s the heavy, constant knock
that means you have a problem.
5.7L LT1 (Code P)
Use premium unleaded gasoline rated at
91 octane or higher. You may use middle
grade or regular unleaded gasolines, but
your vehicle may not accelerate as well.
The gasoline you use should meet
specifications
ASTM D4814 in the U.S.
and
CGSB 3.5-92 in Canada. These fuels
should have the proper additives,
so you
should not have to add anything to the
fuel.
In the
U.S. and Canada, it’s easy to be
sure you get the right lund of gasoline
(unleaded). You’ll see “UNLEADED”
right on the pump. And only unleaded nozzles will fit into your vehicle’s filler
neck. Be sure
the posted octane for premium
is
at least 91 (at least 89 for middle grade
and 87 for regular).
If the octane is less
than 87, you may get a heavy knocking
noise when you drive. If it’s bad enough,
it can damage your engine.
If you’re using fuel rated at
91 octane or
higher and you still hear heavy knocking,
your engine needs service. But don’t
worry if you hear a little pinging noise
when you’re accelerating or driving up a
hill. That’s normal and you don’t have to
buy a higher octane fuel to get rid of
pinging. It’s the heavy, constant knock
that means you have a problem.
All Engines
What about gasoline with blending
materials that contain oxygen
(oxygenates), such as MTBE or alcohol?
MTBE is “methyl tertiary-butyl ether.”
Fuel that is no more than
15% MTBB is
fine for your vehicle.
Ethanol is ethyl or grain alcohol.
Properly-blended fuel that is no more
than 10% ethanol is fine for your vehicle.
Methanol is methyl or wood alcohol.
185 ...
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Service and Appearance Care
Main Fuse Block
1 - Air Bag: SIR Components
2 - Backup Lights; Daytime Running (15
Amp.)
Lights Module (Canada); Turn
Flasher
(20 Amp.)
3 - HVAC Selector Switch (Heater/Ail
Conditioner); Rear Defogger
(25 Amp.)
4 - Powertrain Control Module;
Instrument Cluster; PASS-Key
II@
Decoder Module (10 Amp.)
5 - Powertrain Control Module;
PASS-Key
11s Decoder Module;
Fuel Pump Relay (15 Amp.)
;
6 - Brake LightKruise Release
Switch; Hazard Flasher
(20 Amp.)
7 - Power Door Locks; Power Mirrors;
Hatch Release (15 Amp.)
8
- Audio Alarm Module; Base@
Relay; Courtesy Lights: Console
Compartment, Glove Box, Dome,
Trunk, Rear Courtesy, Rearview
Mirror and Radio (15 Amp.)
9 - Audio Alarm Module; Daytime
Running Lights Module (Canada);
Diagnostic Energy Reserve
Module; Instrument Cluster; Remote Lock Control Module
( 10 Amp.)
10 - Exterior Lighting (20 Amp.)
11 - Cigarette Lighter; Horn Relay
12 - Power Seats; Rear Defogger
13 - Brightness Control (5 Amp.)
14 - Windshield Wipermasher
(25 Amp.)
15 - Power Windows, Convertible
Top Switch
(30 Amp. Circuit
Breaker)
Module
(3 Amp.)
(15 Amp.)
(25 Amp.)
(30 Amp. Circuit Breaker)
16 - Diagnostic Energy Reserve
17 - Radio; Steering Wheel Controls
. . ,230
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C B
G H J
Underhood Electrical Center
Fuses
1 - Electronic Brake Control Module
(5 Amp.)
2
- Fog Lamps (20 Amp.)
3 - HeadIight Doors Module (15
4 - Headlight Doors Module (1 5
5 - Anti-Lock Brake System (5 Amp.)
6 - Coolant Fan Relays; EVAP Canister Purge Solenoid; Exhaust
Gas Recirculation; Low Coolant
Relay; Reverse Lockout Solenoid
(10 Amp.)
Amp.)
Amp.)
7 - Air
Injection Pump Assembly;
8 - Not Used
9 - Fuel Injectors (7.5 Amp.)
10 - Fuel Injectors (7.5 Amp.)
11 - VIN Engine Code S: Camshaft
Air
Pump Relay
(20 Amp.)
Position Sensor; Crankshaft Position Sensor; Electronic
Ignition Module
(10 Amp.)
VIN Engine Code P: Ignition
Coil; Ignition Coil Driver
(10 Amp.)
12 - Air Conditioning Compressor
Relay; Cruise Control Switches
and Module
(20 Amp.)
Relays
B - Air Conditioning Compressor
C - Anti-Lock Brake System
D - Primary Coolant Fan (Driver Side)
E - Air Pump
F - Secondary Coolant Fan
(Passenger Side)
G - Traction Control System
H - Fog Lamps
J - Not Used
231 . ..
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