1999 JAGUAR S TYPE Powertrain Manual

Page 57 of 75

JAGUAR S TYPE 1999 1.G Powertrain Manual V8 Engine AJ-V6/AJ28
52
J.303.1251
D.303.1268 & J.303.1251
D.303.1268
INDUCTION MANIFOLD AND THROTTLE ADAPTOR
Vacuum Connections
AAC Valve Inlet
Noise Isolation Pad
AAI Supply
Tube
Evaporative 
Emissi

Page 58 of 75

JAGUAR S TYPE 1999 1.G Powertrain Manual V8 EngineAJ-V6/AJ28
53
J.303.1359
INDUCTION VACUUM AND AIR SUPPLY CONNECTIONS
J.303.1359
Induction and Vacuum System
Emission and vacuum connections to the
induction system are shown in the illustrati

Page 59 of 75

JAGUAR S TYPE 1999 1.G Powertrain Manual V8 Engine AJ-V6/AJ28
54
Engine Management Sensors
The configuration of the AJ28 engine management sensors is changed from the previous V8 variants:
¥ New components unique to AJ28 engine are the MAF

Page 60 of 75

JAGUAR S TYPE 1999 1.G Powertrain Manual V8 EngineAJ-V6/AJ28
55
J.303.1389
ENGINE MANAGEMENT SCHEMATIC
13
2
45
6
8
157
9
1110
13
16
J.303-1287
9
10
12
14
Key :
1. MAF sensor
2. IAT sensor
3. TP sensor
4. Throttle motor
5. AAC valve
6. IP sen

Page 61 of 75

JAGUAR S TYPE 1999 1.G Powertrain Manual V8 Engine AJ-V6/AJ28
56
Fuel Injection
Returnless Fuel System
The function and operation of the returnless fuel
system is the same as that fitted to the V6 engine
but with different fuel pipework to s

Page 62 of 75

JAGUAR S TYPE 1999 1.G Powertrain Manual V8 EngineAJ-V6/AJ28
57
Air Assisted Injection
The air assisted injection system is very similar to
the AJ27 system, with a solenoid valve controlling
an air supply to the fuel injector nozzles. The AJ

Page 63 of 75

JAGUAR S TYPE 1999 1.G Powertrain Manual V8 Engine AJ-V6/AJ28
58FUEL INJECTOR
303-135
Fuel Injectors
The type of fuel injector used operates in a similar
way to the type fitted to the AJ27 engine but has a
different shroud arrangement at the

Page 64 of 75

JAGUAR S TYPE 1999 1.G Powertrain Manual V8 EngineAJ-V6/AJ28
59
Front End Accessories Drive
The front end accessories drive has a modified
belt run, new type ancillaries and modified
mounting brackets. The belt is changed to a 
6-ribbed type