1998 JAGUAR X308 Fuel tank

                    Coolant E x
pansion
 Tank  (26.15.01)  
                    
Coolant Outlet  Pipe  (26.31.08)  
                    
                     Cooling Fan  Motor  (26.25.24)  
                     Cooling Fan  Motor  and  Shroud  (26.25.25)  
                     Cooling Fan  Motors  (26.25.25)  
                     Cooling Fan  Shroud  (26.25.30)  
                     Engine Coolant  Level  Switch  (26.40.11)  
                     Radiator (26.40.01)  ‐ 3.2L  NA  V8  ‐ AJ26/4.0L  NA V8  ‐ AJ27  
                     Radiator (26.40.01)  ‐ 4.0L  SC  V8 ‐ AJ26  
                     Radiator Lower Hose  (26.30.07)  ‐ 3.2L  NA  V8  ‐ AJ26/4.0L  NA  V8  ‐ AJ27  
                     Radiator Lower Hose  (26.30.07)  ‐ 4.0L  SC  V8 ‐ AJ26  
                     Radiator Upper Ho
se (26.30.01)  ‐ 3.2L  NA  V8  ‐ AJ26/4.0L  NA  V8  ‐ AJ27  
                     Radiator Upper Hose  (26.30.01)  ‐ 4.0L  SC  V8 ‐ AJ26  
                     Thermostat  (26.45.07)  ‐ 3.2L  NA  V8  ‐ AJ26/4.0L  NA  V8  ‐ AJ27  
                     Thermostat  (26.45.07)  ‐ 4.0L  SC  V8 ‐ AJ26  
                     Thermostat  Housing  Cover  (26.
45.22)  ‐ 3.2L  NA  V8  ‐ AJ26/4.0L  NA  V8  ‐ AJ27  
                     Thermostat  Housing  Cover  (26.45.22)  ‐ 4.0L  SC  V8 ‐ AJ26  
                     Thermostat  Housing  Cover  Seal  (26.45.20)  ‐ 3.2L  NA  V8  ‐ AJ26/4.0L  NA V8  ‐ AJ27  
                     Thermostat  Housing  Cover  Seal  (26.45.20)  ‐ 4.0L  SC  V8 ‐ AJ26  
                     Water Pump  (26.50.
01) ‐ 3.2L  NA  V8  ‐ AJ26/4.0L  NA V8  ‐ AJ27  
                     Water Pump  (26.50.01)  ‐ 4.0L  SC  V8 ‐ AJ26  
                     Water Pump  Pulley  (26.50.05)  ‐ 3.2L  NA  V8  ‐ AJ26/4.0L  NA  V8  ‐ AJ27  
                     Water Pump  Pulley  (26.50.05)  ‐ 4.0L  SC  V8 ‐ AJ26  
 
             303‐03B : Supercharger  Cooling 
                 Removal and  Installation  
                     Water Pump  
 
             303‐04:  Fu
el Charging  and Controls  
                 Diagnosis  and  Testing  
                     Fuel Charging  and Controls  
                 Inspection  and Verification  
                     Driver Information  Chart  
                     Default mode Definitions  
                     Diagnostic Trouble  Code  (DTC)  index  
                     Pinpoint Tests  

                    Superchar
ger
 Outlet  Pipe (18.50.16)  
                     Supercharger  Outlet  Pipe Gasket  (18.50.17)  
                     Throttle Body  Elbow  (19.70.28)  
                     Throttle Body  Elbow  Gasket  (19.70.29)  
 
             303‐13:  Evaporative  Emissions  
                 Diagnosis  and  Testing  
                     Evaporative  Emissions 
                                       
Preliminary
 Inspection
 
                     Diagnostic
 Drive  Cycles  
                     Diagnostic
 Trouble  Code  (DTC)  index/Symptom  Chart  
                     Pinpoint
 Tests  
                 Removal
 and  Installation  
                     Evaporative 
Emission Canister  (17.15.13)  
                     Evaporative 
Emission Canister  Purge  Valve (17.15.30)  
                     Fuel
 Tank  Press
ure Sensor  (19.55.31)  
                     Fuel
 Vapor  Vent  Valve  Housing  (19.55.24)  
                     Fuel
 Vapor  Vent  Valve  Housing  Seal  (19.55.25)  
 
             303
‐14:  Electronic  Engine  Controls  
                 Description
 and
 
                                      Diagnosis
 and  Testing  
                     Electronic
 Engine  Con
trols  
                     Inspection
 and  Verification  
                     Driver
 Information  Chart  
                     Default 
mode Definitions  
                     Diagnostic
 Trouble  Code  (DTC)  Index  
                     Pinpoint
 Tests  
                 Removal
 and  Installation  
                     Catalyst 
Monitor  Sensor LH  (18.30.81)  
                     Catalyst 
Monitor  Sensor RH  (18.30.80)  
                     Heated Oxygen  Sensor  (HO2S)  LH  (18.30.79)  
                    
Heated Oxygen  Sensor  (HO2S)  RH  (18.30.78)  
                    
                    
Camshaft  
Position  
Sen s
or
 
ECM  
Position  
Sensor  
Crankshaft
Removal
Engine  
Coolant Temperature
Sensor 
Operation
Intake  Air  Temperature  (IAT)  Sensor  (18.
30.52)  

        309: Exhaust  Syst
em
 
 
             309‐00:  Exhaust  System 
                 Specification  
                 Description  and  Operation  
                     Exhaust System  
                 Diagnosis  and  Testing  
                     Exhaust System  
                 Removal and  Installation  
                     Catalytic Converter  LH  (17.50.15)  ‐ 3.2L  NA  V8  ‐ AJ26/4.0L  NA V8  ‐ AJ27  
                     Catalytic Converter  LH  (17.50.15)  ‐ 4.0L  SC  V8 ‐ AJ26,  Vehicles  With:  
            Supercharger  
                     Catalytic Converter  RH  (17.50.16)  ‐ 3.2L  NA  V8  ‐ AJ26/4.0L  NA V8  ‐ AJ27  
                     Catalyt
ic Converter  RH  (17.50.16)  ‐ 4.0L  SC  V8 ‐ AJ26,  Vehicles  With:  
            Supercharger  
                     Catalytic Converter  Gasket  LH  (17.50.06)  ‐ 3.2L  NA  V8  ‐ AJ26/4.0L  NA  V8  ‐ AJ27  
                     Catalytic Converter  Gasket  LH  (17.50.06)  ‐ 4.0L  SC  V8 ‐ AJ26  
                     Catalytic Converter  Gasket  RH  (17.50.07)  ‐ 3.2L  NA V8  ‐ AJ26/4.0L  NA  V8  ‐ AJ27  
                     Catalyt
ic Converter  Gasket  RH  (17.50.07)  ‐ 4.0L  SC  V8 ‐ AJ26  
                     Front Muffler  (30.10.18)  ‐ 3.2L  NA  V8  ‐ AJ26/4.0L  NA V8  ‐ AJ27  
                     Front Muffler  (30.10.18)  ‐ 4.0L  SC  V8 ‐ AJ26  
                     Intermediate  Muffler LH  (30.10.15)  ‐ 3.2L  NA  V8  ‐ AJ26/4.0L  NA  V8  ‐ AJ27  
                     Intermediate  Muffler LH  (30.10.15)  ‐ 4.0L  SC  V8 ‐ AJ
26  
                     Intermediate  Muffler RH  (30.10.16)  ‐ 3.2L  NA  V8  ‐ AJ26/4.0L  NA  V8  ‐ AJ27  
                     Intermediate  Muffler RH  (30.10.16)  ‐ 4.0L  SC  V8 ‐ AJ26  
                     Muffler and Tailpipe  LH (30.10.22)  
                     Muffler and Tailpipe  RH (30.10.52)  
 
        310:  Fuel  System  
 
             310‐00:  Fuel  System  ‐ General  Information  
                 General Procedures  
                     Fuel System  Pressure  Check  
                     Fuel Tank  Draining  
 
  
Fuel  Sy stem  Pres
sure
 Release  

            310‐01:  Fu el Tank  and  Lines  
                 Removal and  Installation  
                     Fuel Level  Sensor  (88.25.32)  
                     Fuel Pump  (19.45.08)  
                     Fuel Tank  (19.55.01)  
 
             310‐02
:
 Acceleration  Control  
                 General Procedures  
                     Accelerator  Cable  Adjustment  (12.20.05)  
                 Removal and  Installation  
                     Accelerator  Cable  (19.20.06)  
 
             310‐03:  Speed  Control  
                 Diagnosis  and  Testing  
                     Speed Con
trol 
 
    4:  Electrical  
 
        412:  Climate  Control  System  
 
             412‐00:  Climate  Control  System  ‐ General  Information 
                 Specification  
                 Description  and  Operation  
                     Climate Control System  
                 Diagnosis  and  Testing  
                     Climate Control System  
                 General Procedures  
                     Air Conditioning  (A/C)  System  Check ‐  Retail Procedure  
                     Air Conditioning  (A/C)  System  Recovery,  Evacuation  and  Charging  (82.30.30)  
                     Contaminated  Refrigerant  Ha
ndling  
                     Manifold Gauge  Set Connection  
                     Refrigerant  Adding (82.30.02)  
                     Refrigerant  Oil Adding  
                     Refrigerant  System Tests  
 
             412‐01:  Air  Distribution  and  Filtering  
                 Description  and  Operation  

Suspension System - General Informatio
n -
Lubric
ants, Fluids, Sealants and Adhesives
Front Suspension Dimensions
• NO
TE: When a component reaches its maximum / minimum dimension limit the component must be replaced.
Rear sus
p
ension Dimensions
•
NO
TE: When a component reaches its maximum / minimum dimension limit the component must be replaced.
Vehicle ride
height


R i
de height is measured from
the center of the wheel to the apex of the wheel arch, through the wheel center line.
Showroom is with a
ll fluids at full an
d 9 liters (9.5 US quarts) of fuel.
Curb is
with all fluids at full and a full tank of fuel.
All f
i
gures quoted assume a ±
15 mm (0.59in) anticipated bu ild variance and condition.
Whee
l Alignment - Front Camber - XJR Excluding NAS, and German Super-8

Al l the above fi
gures
are at "showroom" height. (See ride height section above).
Tires must be infl
ated
to normal pressure.
For additional informat ion, refer to Section 204
-04
Wheels and Tires
.
Whe
e
l Alignment - Front Camber - XJR NAS, and Comfort/Sport/Daimler Super-8
UnitSp
ecification
Loctite27
0
Greas eShell Retin a
x 'A'
Greas
eCastro l 'NT
R'
Com
p
onent
Di
mensi
on
Hub face
-
maximum run-out
0.
03
8 mm
Com
p
onent
Di
mensi
on
Hub face
-
maximum run-out
0.
05
7 mm
Mod
e
l
Mod
e
l Year
V
I
N RANGE
Mark
et
Sh
owroom mm(in)
Curb mm(i
n)
FromToFron
t
RearFr
on
t
Rear
Com
f
ort suspension
1
998
to 2003.5
8
123
17
F
595
25
All3
90 (
15.11)
3
84 (
15.11)
3
89 (
15.31)
3
73 (
14.68)
Sport su
spe
nsion
"""All3
89 (
15.31)
3
81 (
15.00)
3
88 (
15.27)
3
72 (
14.64)
XJR"""NAS3
89 (
15.31)
3
82 (
15.03)
3
88 (
15.27)
3
72 (
14.64)
XJR"""RO
W367 (
14.44)
3
65 (
14.37)
3
66 (
14.40)
3
58 (
14.09)
Supercharged super 8"""All3
89 (
15.31)
3
82 (
15.03)
3
88 (
15.27)
3
72 (
14.64)
XJR

Excluding NAS, and German Super-8
1998 to

2003.5
VIN - 812317 to F59525
Units
Cambe r
Left
- Hand
Rig
h
t - Hand
Bal
a
nce (RH - LH)
MinMaxMinMaxMinMax
All Right-Hand driv
e and JapanDegrees
/minutes
-
1
° 28'
-0
°
28'
-
1
° 13'
-
0
° 13'
-0
° 45'+1 °
15'
Decimal degrees-1.
4
7°
-0
.4
7°
-1
.2
2°
-0.
2
2°
-0
.7
5°
+1
.25
°
R
e
st of World
De
grees
/minutes
-
1
° 13'
-0
°
13'
-
1
° 28'
-
0
° 28'
-1
° 15'+0 °
45'
Decimal degrees-1.
2
2°
-0
.2
2°
-1
.4
7°
-0.
4
7°
-1
.2
5°
+0
.75
°
XJR

NAS, and Comfort/Sport/Daimler Super-8
1
998 to
2003.5
VIN - 812317 to F59525
Units
Cambe r
Left
- Hand
Rig
h
t - Hand
Bal
a
nce (RH -
LH)
MinMaxMinMaxMinMax
All Right-Hand drive and JapanDegrees
/minutes
-1°
02'-0
° 02'
-0°

47'
+0°

13'
-0° 45'+1°

15'
Decimal degrees-1.0
3°
-0.0
3°
-0.7
8°
+0.22
°
-0.7
5°
+1.25
°
USA, Canada an
d Mexico,
Dominican
Republic (NAS)
De grees
/minutes
-0°
32 '+0 °

28'
-1 °

02'
-0 °
02'
-1°
30 '+0 °

30'
Decimal degrees-0. 5
3°
+0
.47
°
-1
.0
3°
-0
.0
3°
-1.
5
0°
+0
.50
°
R
e
st of World
De
grees
/minutes
-0°
47 '+0 °

13'
-1 °

02'
-0 °
02'
-1°
15 '+0 °

45'

Decimal degrees-0. 7
8°
+0
.22
°
-1
.0
3°
-0
.0
3°
-1.
2
5°
+0
.75
°

Suspension System - General Information - Front Camber and Caster
Adjust
ment
Gen
eral Procedures
• NOTE: Before any work is commenced, th e vehicle must be checked to establish that it conforms to the Jaguar original
specification, e.g. wheels, ti res, tire pressures, etc.
• NOTE: The vehicle must be unladen and the fuel tank full when measuring suspension geometry.

1.
Road test the vehicle to establish the exact nature of the
complaint, e.g. pulling to one side, wander.
2. Measure the suspension geometry, fill in the 'Suspension
Geometry Record Form', and co ntact Jaguar Technical Support
for assistance.
3. Technical Support will give advice on the course of action to be
taken to rectify the problem.
4. Each lower wishbone pivots on and is secured to the front
crossbeam by two fulcrum bolts. A circular eccentric flange
formed under the hexagonal head of each fulcrum bolt, has
raised graduation marks to indicate radial position. A washer
with a 'D' shaped hole locates on a flat on the threaded section
of each bolt. This ensures that the washer rotates with the bolt,
maintaining an eccentric position corresponding with the
flanged head. The outer face of the washer is punch marked,
ensuring correct instal lation with the chamfered face inwards.
This permits the washer to rotate freely in the crossbeam cam
reaction plate during a djustm ent. Each fulcrum bolt and
washer are secured by a self locking nut.
On rotation of the bolt, lateral movement of the eccentric flange
and washer is restricted by the cam plate faces, forcing the bolt
shank to move laterally in the crossbeam slots. Lateral
movement of the bolt shank re sults in corresponding inward
and outward movement of th e wishbone arm, effecting
adjustment of wh eel alignment.
Rotation of the front fulcrum bolt principally adjusts wheel
caster angle, with a small amount of camber angle change.
Adjustment of the rear fulcrum bo lt mainly alters wheel camber
angle with a small amount of caster angle change.
On vehicles with VIN up to 833124, fulcrum bolt eccentric
flanges have raised graduation marks representing 15 degree
increments of bolt rotati on from 0 to 90 degrees.
On vehicles with VIN from 833125, the fulcrum bolt graduation
marks represent bolt shank ho rizontal movement in 1mm
increments from 0 to 3mm.
The upper wishbone and fulcrum shaft are not adjustable and
play no part in steering geometry adjustment.

E
ngine Management System Components
Electronic Throt
tle
The
electronic throttle assembly, in resp
onse to signals from both the driver and the ECM, adjusts idle speed, sets the
throttle valve to the position requested by the driver's accelerator / throttle pedal, cruise and traction control, power
limitation and catalyst warm-up.
Mass
Air Flow Meter
The sensor i
s located in the air flow mete
r assembly and outputs an analogue voltag e to the ECM. This sensor measures air
flow into the engine inlet system and is calibrated to measure kg / hour.
In
take Air Temperature
Th
e intake air temperature sensor is loca
ted in the air flow meter assembly and outputs an analogue voltage to the ECM.
The ECM will substitute a default value eq ual to 50°C should this sensor fail.
Fuel Injectors
The eigh
t bottom fed fuel injectors are located in the fuel rails. Th
e fuel injectors are electromagnetic solenoid valves
controlled by the ECM. The pulse time for the injector combined with the fuel pr essure determines the volume of fuel
injected to the manifold.
Fue
l Delivery
The fu
el pump provides fuel to the fuel rail where the circulat
ing pressure is controlled by a pressure regulator valve; excess
fuel is returned to the fuel tank.
The pressure regulator valve is controlled by manifold depression so that fuel delivery pressure is maintained at
approximately 3 bar above manifold pressure.
Fuel Pump
Relay
The ECM controls thi

s component for normal
engine running. The security system may disable this relay via communication
with the ECM.
Fuel Lev
el Sensing
The tank fuel

is measured by the fuel le
vel sensor . This signal is used by the ECM as an in put to certain diagnostics.
Eva
porative Valve
Excess vapour

formed in the fuel tank is
absorbed into the evaporative emission pu rge control canister. While the engine is
running, the fuel absorbed in the canister is gradually purged back into the engine. The rate of purging is governed by
engine operating conditions and vapour concentration level. Operating conditions which affect the purge rate are:
2—Purge
valve
3—Engine

torque reduction
4—E

lectronic throttle assembly
5—Coo

ling fans
6—Ignition amplifier driver
7—Engine overspeed
8—Cli

mate control compressor clutch
9—O

BDII information (J1962, CAN, ISO)

10—F
uel pump relay
11—Heat

ed oxygen sensor
12—Vari

able valve timing
13—MIL sw

itching



ECM Out
puts
It

em
Par
t Number
De
scription
1—Exhaus

t gas recirculation

Fuel Char
ging and Controls - Fuel Charging and Controls
Description an
d Operation

This section provides service informatio n for the fuel distribution components located on the engine and includes the
supercharger, where fitted. Refer to Section 310-01 for informatio n on the fuel tank, fuel lines and related fuel supply items.

Fuel Charging and Controls -
Normally Aspirated Vehicles

P
a
rts List
It
e
m
Par
t
Number
De
scr
iption
1—F
u
el feed from tank to bank 2
2—Fue
l
injector
3—Inta
k
e manifold/fuel rail
4—Te
st
/de-pressurization valve
5—F
u
el cross-over pipe
6—F
u
el pressure regulator
7—F
u
el return to tank