Dodge Viper SRT-10 (ZB). Manual - part 198

FUEL FILLER TUBE

REMOVAL

(1) Loosen fuel filler tube cap.
(2) Remove fuel filler neck screws (Fig. 61).
(3) Raise vehicle on hoist.
(4) Remove right rear tire.
(5) Remove inner splash shields.
(6) Remove the rubber vapor recirculation line at

the fuel filler tube.

(7) Disconnect fuel filler tube from fuel tank.

Remove filler neck.

INSTALLATION

(1) Connect fuel filler tube to fuel tank. Tighten

clamp.

(2) Install the rubber vapor recirculation line to

the fuel filler tube.

(3) Install inner splash shields.
(4) Install right rear tire.
(5) Lower vehicle.
(6) Install fuel filler neck screws (Fig. 61).
(7) Tighten fuel filler tube cap.

FUEL PUMP INLET STRAINER

DESCRIPTION

The fuel pump inlet strainer is a non-serviceable

part.

QUICK CONNECT FITTING

STANDARD PROCEDURE - QUICK-CONNECT
FITTINGS

REMOVAL

When disconnecting a quick-connect fitting, the

retainer will remain on the fuel tube nipple.

WARNING: RELEASE FUEL SYSTEM PRESSURE
BEFORE DISCONNECTING A QUICK-CONNECT FIT-
TINGS. REFER TO THE FUEL PRESSURE RELEASE
PROCEDURE.

(1) Perform

Fuel

Pressure

Release

Procedure.

Refer to the Fuel Pressure Release Procedure in this
section.

(2) Disconnect negative cable from battery or aux-

iliary jumper terminal.

(3) Squeeze retainer tabs together and pull fuel

tube/quick-connect fitting assembly off of fuel tube
nipple. The retainer will remain on fuel tube.

INSTALLATION

CAUTION: Never install a quick-connect fitting with-
out the retainer being either on the fuel tube or
already in the quick-connect fitting. In either case,
ensure the retainer locks securely into the quick-
connect fitting by firmly pulling on fuel tube and fit-
ting to ensure it is secured.

(1) Using a clean lint free cloth, clean the fuel tube

nipple and retainer.

(2) Prior to connecting the fitting to the fuel tube,

coat the fuel tube nipple with clean engine oil.

(3) Push the quick-connect fitting over the fuel

tube until the retainer seats and a click is heard.

(4) The plastic quick-connect fitting has windows

in the sides of the casing. When the fitting com-
pletely attaches to the fuel tube, the retainer locking
ears and the fuel tube shoulder are visible in the
windows. If they are not visible, the retainer was not
properly installed (Fig. 62). Do not rely upon the
audible click to confirm a secure connection.

(5) Connect negative cable to battery or auxiliary

jumper terminal.

CAUTION: When using the ASD Fuel System Test,
the Auto Shutdown (ASD) Relay remains energized
for several minutes, until the test is stopped, or
until the ignition switch is turned to the Off posi-
tion.

(6) Use the DRB III

t scan tool ASD Fuel System

Test to pressurize the fuel system. Check for leaks.

Fig. 61 FUEL FILLER UPPER TUBE

14 - 22

FUEL DELIVERY

TWO-TAB TYPE FITTING

This type of fitting is equipped with tabs located on

both sides of the fitting (Fig. 63). These tabs are sup-
plied for disconnecting the quick-connect fitting from
component being serviced.

CAUTION: The interior components (O-rings, spac-
ers) of this type of quick-connect fitting are not ser-
viced separately, but new plastic retainers are
available. Do not attempt to repair damaged fittings
or fuel lines/tubes. If repair is necessary, replace
the complete fuel tube assembly.

WARNING: THE FUEL SYSTEM IS UNDER A CON-
STANT PRESSURE (EVEN WITH THE ENGINE OFF).
BEFORE SERVICING ANY FUEL SYSTEM HOSES,
FITTINGS OR LINES, THE FUEL SYSTEM PRES-
SURE MUST BE RELEASED. REFER TO THE FUEL
PRESSURE

RELEASE

PROCEDURE

THIS

GROUP.

DISCONNECTION/CONNECTION

(1) Perform fuel pressure release procedure. Refer

to Fuel Pressure Release Procedure in this group.

(2) Disconnect negative battery cable from battery

or auxiliary jumper terminal.

(3) Clean fitting of any foreign material before dis-

assembly.

(4) To disconnect quick-connect fitting, squeeze

plastic retainer tabs (Fig. 63) against sides of quick-
connect fitting with your fingers. Tool use is not
required

for

removal

and

may

damage

plastic

retainer. Pull fitting from fuel system component
being serviced. The plastic retainer will remain on
component being serviced after fitting is discon-
nected. The O-rings and spacer will remain in quick-
connect fitting connector body.

(5) Inspect quick-connect fitting body and compo-

nent for damage. Replace as necessary.

CAUTION: When the quick-connect fitting was dis-
connected, the plastic retainer will remain on the
component being serviced. If this retainer must be
removed, very carefully release the retainer from
the component with two small screwdrivers. After
removal, inspect the retainer for cracks or any dam-
age.

(6) Prior to connecting quick-connect fitting to

component being serviced, check condition of fitting
and component. Clean parts with a lint-free cloth.
Lubricate with clean engine oil.

(7) Insert quick-connect fitting to component being

serviced and into plastic retainer. When a connection
is made, a click will be heard.

(8) Verify a locked condition by firmly pulling on

fuel tube and fitting (15-30 lbs.).

(9) Connect negative cable to battery or auxiliary

jumper terminal.

(10) Use the DRB III

t scan tool ASD Fuel System

Test to pressurize the fuel system. Check for leaks.

Fig. 62 Plastic Quick-Connect Fitting/Fuel Tube

Connection

1 - WINDOW
2 - TAB (2)
3 - EAR
4 - SHOULDER (ON TUBE)

Fig. 63 Typical Two-Tab Type Quick-Connect Fitting

1 - TAB(S)
2 - QUICK-CONNECT FITTING

FUEL DELIVERY

14 - 23

QUICK CONNECT FITTING (Continued)

PLASTIC RETAINER RING TYPE FITTING

This type of fitting can be identified by the use of a

full-round plastic retainer ring (Fig. 64) usually black
in color.

CAUTION: The interior components (O-rings, spac-
ers, retainers) of this type of quick-connect fitting
are not serviced separately. Do not attempt to repair
damaged fittings or fuel lines/tubes. If repair is nec-
essary, replace the complete fuel tube assembly.

DISCONNECTION/CONNECTION

(1) Perform fuel pressure release procedure. Refer

to Fuel Pressure Release Procedure in this section.

(2) Disconnect negative battery cable from battery

or auxiliary jumper terminal.

(3) Clean fitting of any foreign material before dis-

assembly.

(4) To release fuel system component from quick-

connect fitting, firmly push fitting towards compo-
nent being serviced while firmly pushing plastic
retainer ring into fitting (Fig. 64). With plastic ring
depressed, pull fitting from component. The plastic
retainer ring must be pressed squarely into fit-
ting body. If this retainer is cocked during
removal, it may be difficult to disconnect fit-
ting. Use an open-end wrench on shoulder of
plastic retainer ring to aid in disconnection.

(5) After disconnection, plastic retainer ring will

remain with quick-connect fitting connector body.

(6) Inspect fitting connector body, plastic retainer

ring and fuel system component for damage. Replace
as necessary.

(7) Prior to connecting quick-connect fitting to

component being serviced, check condition of fitting
and component. Clean parts with a lint-free cloth.
Lubricate with clean engine oil.

(8) Insert quick-connect fitting into component

being serviced until a click is felt.

(9) Verify a locked condition by firmly pulling on

fuel tube and fitting (15-30 lbs.).

(10) Connect negative battery cable to battery or

auxiliary jumper terminal.

(11) Use the DRB III

t scan tool ASD Fuel System

Test to pressurize the fuel system. Check for leaks.

PRESSURE VACUUM FILLER
CAP

DESCRIPTION

The fuel fill cap is threaded/quarter turn onto the

end of the fuel filler tube. It’s purpose is to retain
vapors and fuel in the fuel tank.

OPERATION

The fuel filler cap incorporates a two-way relief

valve that is closed to atmosphere during normal
operating conditions. The relief valve is calibrated to
open when a pressure of 10.9 to 13.5 kPa (1.6 to 2.0
psi) or vacuum of 1.0 to 2.0 kPa (.15 to .29 psi) occurs
in the fuel tank. When the pressure or vacuum is
relieved, the valve returns to the normally closed
position. The cap must be replaced by a similar unit
if replacement is necessary.

CAUTION: Remove the fuel filler cap to release fuel
tank pressure before disconnecting any fuel system
component.

Fig. 64 Plastic Retainer Ring Type Fitting

1 - FUEL TUBE
2 - QUICK CONNECT FITTING
3 - PUSH
4 - PLASTIC RETAINER
5 - PUSH
6 - PUSH
7 - PUSH
8 - PUSH

14 - 24

FUEL DELIVERY

QUICK CONNECT FITTING (Continued)

FUEL INJECTION

TABLE OF CONTENTS

page

FUEL INJECTION

OPERATION

OPERATION - INJECTION SYSTEM

. . . . . . . 25

OPERATION - MODES OF OPERATION

. . . . 26

FUEL CORRECTION or ADAPTIVE

MEMORIES . . . . . . . . . . . . . . . . . . . . . . . . . . 28

SPECIFICATIONS

TORQUE

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

SPECIAL TOOLS

FUEL

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

ACCELERATOR PEDAL

DESCRIPTION

. . . . . . . . . . . . . . . . . . . . . . . . . 30

REMOVAL

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

CRANKSHAFT POSITION SENSOR

DESCRIPTION

. . . . . . . . . . . . . . . . . . . . . . . . . 31

OPERATION

. . . . . . . . . . . . . . . . . . . . . . . . . . . 31

REMOVAL

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

INSTALLATION

. . . . . . . . . . . . . . . . . . . . . . . . . 31

FUEL INJECTORS

DESCRIPTION

. . . . . . . . . . . . . . . . . . . . . . . . . 31

OPERATION

. . . . . . . . . . . . . . . . . . . . . . . . . . . 32

REMOVAL

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

INSTALLATION

. . . . . . . . . . . . . . . . . . . . . . . . . 34

FUEL PUMP RELAY

DESCRIPTION

. . . . . . . . . . . . . . . . . . . . . . . . . 34

OPERATION

. . . . . . . . . . . . . . . . . . . . . . . . . . . 34

IDLE AIR CONTROL MOTOR

DESCRIPTION

. . . . . . . . . . . . . . . . . . . . . . . . . 34

OPERATION

. . . . . . . . . . . . . . . . . . . . . . . . . . . 35

REMOVAL

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

INSTALLATION

. . . . . . . . . . . . . . . . . . . . . . . . . 35

INLET AIR TEMPERATURE SENSOR

DESCRIPTION

. . . . . . . . . . . . . . . . . . . . . . . . . 35

REMOVAL

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

INSTALLATION

. . . . . . . . . . . . . . . . . . . . . . . . . 35

MAP SENSOR

DESCRIPTION

. . . . . . . . . . . . . . . . . . . . . . . . . 36

OPERATION

. . . . . . . . . . . . . . . . . . . . . . . . . . . 36

REMOVAL

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

INSTALLATION

. . . . . . . . . . . . . . . . . . . . . . . . . 37

O2 SENSOR

DESCRIPTION

. . . . . . . . . . . . . . . . . . . . . . . . . 37

OPERATION

. . . . . . . . . . . . . . . . . . . . . . . . . . . 37

REMOVAL

8.3L - UPSTREAM 1/1, 2/1

. . . . . . . . . . . . . . . 38

8.3L - DOWNSTREAM 1/2, 2/2

. . . . . . . . . . . . 38

INSTALLATION

8.3L - UPSTREAM 1/1, 2/1

. . . . . . . . . . . . . . . 38

8.3L - DOWNSTREAM 1/2, 2/2

. . . . . . . . . . . . 38

THROTTLE BODY

DESCRIPTION

. . . . . . . . . . . . . . . . . . . . . . . . . 39

OPERATION

. . . . . . . . . . . . . . . . . . . . . . . . . . . 39

REMOVAL

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

INSTALLATION

. . . . . . . . . . . . . . . . . . . . . . . . . 40

THROTTLE CABLE

REMOVAL

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

INSTALLATION

. . . . . . . . . . . . . . . . . . . . . . . . . 41

THROTTLE POSITION SENSOR

DESCRIPTION

. . . . . . . . . . . . . . . . . . . . . . . . . 41

OPERATION

. . . . . . . . . . . . . . . . . . . . . . . . . . . 41

REMOVAL

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

INSTALLATION

. . . . . . . . . . . . . . . . . . . . . . . . . 42

FUEL INJECTION

OPERATION

OPERATION - INJECTION SYSTEM

All engines used in this section have a sequential

Multi-Port Electronic Fuel Injection system. The MPI
system is computer regulated and provides precise
air/fuel ratios for all driving conditions. The Power-
train Control Module (PCM) operates the fuel injec-
tion system.

The PCM regulates:
• Ignition timing

• Air/fuel ratio

• Emission control devices

• Cooling fan

• Charging system

• Idle speed
Various sensors provide the inputs necessary for

the PCM to correctly operate these systems. In addi-
tion to the sensors, various switches also provide
inputs to the PCM.

The PCM can adapt its programming to meet

changing operating conditions.

Fuel is injected into the intake port above the

intake valve in precise metered amounts through
electrically operated injectors. The PCM fires the
injectors in a specific sequence. Under most operat-
ing conditions, the PCM maintains an air fuel ratio
of 14.7 parts air to 1 part fuel by constantly adjust-
ing injector pulse width. Injector pulse width is the
length of time the injector is open.

FUEL INJECTION

14 - 25

Content .. 196 197 198 199 ..