Range Rover. Manual — part 107
LAND ROVER V8
29
REPAIR
6. Remove 6 nuts securing fuel rail and ignition coil
bracket to inlet manifold.
7. Lift fuel rail slightly for access. Release ignition
coil bracket from inlet manifold studs. Place
aside.
CAUTION: Do not completely withdraw
injectors from fitted locations.
8. Remove bolts securing fuel pressure regulator to
fuel rail.
9. Remove fuel pressure regulator assembly.
10. Release connecting pipe and hose assembly
from regulator.
11. Remove ’O’ ring and spacer ring from fuel
pressure regulator. Discard ’O’ ring.
Refit
12. Ensure locations on fuel pressure regulator and
fuel rail are clean.
13. Fit new spacer ring and ’O’ ring to fuel pressure
regulator. Lubricate ’O’ ring with silicone grease.
14. Fit connecting pipe assembly to fuel pressure
regulator. Secure clip.
15. Fit pressure regulator assembly to fuel rail.
Secure with bolts. Tighten to
10 Nm (7 lbf.ft)
16. Secure regulator connecting pipe in clip.
17. Align ignition coil bracket to inlet manifold studs.
18. Secure ignition coil bracket and fuel rail to inlet
manifold with nuts. Tighten to
8 Nm (6 lbf.ft)
19. Connect return pipe to regulator connecting pipe.
Secure with clip.
NOTE: Advanced EVAPS vehicles have a
threaded connection to the return hose.
20. Connect vacuum hose to fuel pressure regulator.
21. Reconnect battery negative lead.
22. Start engine. Check for leaks around fuel
pressure regulator, fuel feed and fuel return
unions.
19
FUEL SYSTEM
NEW RANGE ROVER
30
REPAIR
IDLE AIR CONTROL (IAC) VALVE - up to 99MY
Service repair no - 19.22.54
Remove
1. Disconnect battery negative lead.
2. Disconnect IAC multiplug.
3. Remove 2 bolts, remove IAC. Discard gasket.
Refit
4. Ensure all mating faces are clean.
5. Using a new gasket, fit IAC. Secure with bolts.
Tighten to
2.3 Nm (2 lbf.ft)
6. Connect multiplug.
7. Reconnect battery negative lead.
IDLE AIR CONTROL (IAC) VALVE - from 99MY
Service repair no - 19.22.54
Remove
1. Disconnect IAC valve multiplug.
2. Release and remove 2 clips securing air hoses
and release hoses.
3. Remove 2 screws securing IAC valve to inlet
manifold.
4. Collect IAC valve clamps and remove IAC valve.
Refit
5. Position IAC valve, locate clamps, fit screws and
tighten to
8.5 Nm (6 lbf.ft).
6. Position air hoses and secure clips.
7. Connect IAC valve multiplug.
8. Connect Testbook to clear any fault codes.
LAND ROVER V8
31
REPAIR
PLENUM CHAMBER - up to 97MY
Service repair no - 19.22.46
Remove
1. Disconnect battery negative lead.
2. Slacken clip securing intake hose to plenum
chamber. Release hose.
3. Remove throttle and cruise control cables from
throttle linkage.
4. Remove throttle and cruise control cable from
abutment bracket.
5. Release harness clip from throttle linkage
bracket.
6. Disconnect breather hose from plenum chamber.
7. Disconnect multiplugs from idle air control (IAC)
and throttle position sensor (TP Sensor).
8. Remove 6 bolts securing plenum chamber.
Remove plenum chamber from ram pipe
housing.
9. Place cloth over ram pipes to prevent ingress of
foreign matter.
Do not carry out further dismantling if
component is removed for access only.
10. Clamp coolant hoses with an approved hose
clamp.
11. Disconnect coolant hoses from water jacket.
Remove plenum chamber.
12. Remove 4 bolts securing water jacket to plenum
chamber. Remove water jacket. Remove gasket
and discard.
19
FUEL SYSTEM
NEW RANGE ROVER
32
REPAIR
13. Remove 3 bolts securing throttle linkage bracket
to plenum chamber. Remove bracket. Collect
return spring.
14. Remove 2 bolts securing TP sensor. Collect
clamp plate. Remove TP sensor.
15. Remove 2 bolts securing IAC. Remove motor.
Remove gasket and discard.
Refit
16. Ensure all mating surfaces are clean.
17. Fit TP sensor. Ensure drive engages correctly
with throttle spindle.
18. Position clamp plate. Secure TP sensor with
bolts. Tighten to
2 Nm (2 lbf.ft)
19. Using a new gasket, fit IAC. Secure with bolts.
Tighten to
2.3 Nm (1.8 lbf.ft)
20. Ensure mating faces of water jacket and plenum
chamber are clean.
21. Using a new gasket, fit water jacket. Secure with
bolts. Tighten to
13 Nm (10 lbf.ft)
22. Position throttle linkage bracket, fit and engage
return spring.
23. Secure linkage bracket to plenum chamber with
bolts. Tighten to
8 Nm (6 lbf.ft)
24. Ensure mating faces of plenum chamber and
ram pipe housing are clean.
25. Position plenum chamber. Connect coolant
hoses to water jacket. Secure with clips.
26. Remove clamp from coolant pipes.
27. Apply a thin, uniform coating of Loctite 577
sealant to sealing face of plenum chamber.
28. Fit plenum chamber.
29. Fit plenum chamber bolts. Tighten to
24 Nm (18
lbf.ft)
30. Connect multiplugs to TP sensor and IAC.
31. Connect breather hose to plenum chamber.
32. Secure harness clip to throttle linkage bracket.
33. Engage throttle cable and cruise control cable to
abutment. Secure cruise control cable with ’C’
clip.
34. Align cables to throttle linkage. Fit clevis pins.
Secure clevis pins with split pins.
35. Adjust throttle cable.
See Adjustment.
36. Connect intake hose. Secure with clip.
37. Reconnect battery negative lead.
38. Top up cooling system.
39. Check base idle speed. Adjust if necessary.
If 4.6
See ENGINE TUNING DATA, Information.
If 4.0
See ENGINE TUNING DATA, Information.
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