service LAND ROVER DISCOVERY 1995 Workshop Manual

SFI
1
REPAIR CAMSHAFT POSITION SENSOR (CMP SENSOR)
Service repair no - 19.22.07
Remove
1.Disconnect battery negative lead.
2.Raise vehicle on a ramp.
3.Release sensor mutiplug from clip located on
front cover.
4.Disconnect multiplug.
5.Remove bolt securing sensor.
6.Remove sensor from front cover.
7.Remove 'O' ring from sensor and discard.Refit
8.Clean sensor and mating face on front cover.
9.Lubricate NEW 'O' ring and fit to sensor.
10.Engage CMP sensor in front cover location.
Secure with bolt. Tighten to
8 Nm.
11.Connect sensor multiplug and secure to bracket.
12.Lower ramp.
13.Reconnect battery negative lead.

19FUEL SYSTEM
2
REPAIR ENGINE COOLANT TEMPERATURE SENSOR (ECT
SENSOR)
Service repair no - 18.30.10
Remove
1.Disconnect battery negative lead.
2.Remove spring clip and disconnect ECT sensor
multiplug.
3.Position cloth around ECT sensor to absorb
coolant spillage.
4.Remove ECT sensor.
5.Remove sealing washer and discard.
Refit
6.Clean sealing washer, sensor threads and
sensor location.
7.Coat sensor threads with Loctite 577 and fit new
sealing washer.
8.Fit ECT sensor. Tighten to
20 Nm.
9.Fit spring clip to multiplug and connect multiplug
to ECT sensor.
10.Top up cooling system.
11.Run engine to normal operating temperature.
Check for leaks around ECT sensor.CRANKSHAFT POSITION SENSOR (CKP SENSOR)
Service repair no - 18.30.12
Remove
1.Disconnect battery negative lead.
2.Raise vehicle on ramp.
3.Remove 2 bolts securing sensor/shield to engine
backplate.
4.Remove sensor/shield.
5.Remove shield.
6.Disconnect sensor multiplug and remove sensor.
7.Remove spacer from sensor.
CAUTION: All vehicles have a spacer fitted
to the sensor. Ensure spacer is correctly
refitted.
Refit
8.Clean mating faces.
9.Fit spacer to sensor.
10.Position sensor and connect multiplug.
11.Position shield to sensor and align sensor/shield
to engine backplate.
12.Fit bolts. Tighten to
6 Nm.
13.Lower ramp.
14.Reconnect battery negative lead.

19FUEL SYSTEM
4
REPAIR ENGINE CONTROL MODULE (ECM)
Service repair no - 18.30.01
Remove
1.Disconnect battery negative lead.
2.Release and move washer reservoir aside.See
WIPERS AND WASHERS, Repair, Washer
Reservoir
3.Remove 2 studs securing ECM cover.
4.Remove cover.
5.Disconnect 3 ECM multiplugs.
6.Remove 2 bolts securing ECM.
7.Release ECM from 2 lower retainers.
8.Remove ECM.
Refit
9.Reverse removal procedure.
NOTE: Ensure ECM is correctly located by
lower retainers.MASS AIR FLOW SENSOR (MAF SENSOR)
Service repair no - 19.22.25
Remove
1.Disconnect battery negative lead.
2.Loosen clip and disconnect intake hose from
MAF sensor.
3.Disconnect multiplug from MAF sensor.
4.Release 2 clips and remove MAF sensor from air
cleaner.
5.Collect 'O' ring seal.
Refit
6.Ensure mating faces of air cleaner, MAF sensor
and intake hose are clean.
7.Fit 'O' ring to MAF sensor.
8.Fit MAF sensor to air cleaner and secure with
clips.
9.Connect multiplug to MAF sensor.
10.Connect intake hose and secure with clip.
CAUTION: Failure to connect intake hose
securely will allow unmetered air to enter
the engine, causing running problems.
11.Reconnect battery negative lead.

SFI
5
REPAIR FUEL RAIL AND INJECTORS
Service repair no - 19.60.04 - Fuel Rail
Service repair no - 19.60.12 - Injectors
Remove
1.Disconnect battery negative lead.
2.Depressurise fuel system.
See Fuel System -
Depressurise
3.Release plenum chamber and place aside.See
Plenum Chamber
4.Disconnect purge hose, crankcase breather
hose, servo vacuum hose and fuel regulator
hose from ram housing.
5.Remove 6 bolts securing ram housing to inlet
manifold.6.Place small packing block on inlet manifold.
Lever between packing block and ram pipe
housing to break seal.
CAUTION: Do not lever against fuel rail.
7.Remove ram housing.
8.Place cloth over inlet manifold to prevent ingress
of foreign matter.
9.Disconnect 8 injector multiplugs.
10.Disconnect fuel temperature sensor multiplug.
11.Position cloth around fuel feed pipe union to
absorb fuel spillage.
12.Disconnect fuel feed pipe from fuel rail.
13.Plug fuel pipe and rail.
14.Slacken clip securing fuel return hose.

SFI
7
REPAIR FUEL TEMPERATURE SENSOR
Service repair no - 19.22.08
Remove
NOTE: Because fuel leakage will not occur
when sensor is removed, it is not
necessary to depressurise the fuel system
for this operation.
1.Disconnect battery negative lead.
2.Disconnect multiplug from fuel temperature
sensor.
3.Remove sensor from fuel rail.
Refit
4.Ensure sensor and location in fuel rail are clean.
5.Fit sensor. Tighten to
17 Nm.
6.Connect multiplug.
7.Reconnect battery negative lead.

19FUEL SYSTEM
8
REPAIR IGNITION COILS
Service repair no - 18.20.45 - Set
Service repair no - 18.20.43 - Each
Service repair no - 18.20.44 - Extra - Each
Remove
1.Disconnect battery negative lead.
2.Disconnect H.T. leads from ignition coils. Note
positions of leads.
3.Place H.T. leads aside.
4.Disconnect ignition coil multiplug.
5.Remove 4 nuts securing coil bracket.
6.Release ignition coil bracket from inlet manifold
studs.
7.Manoeuvre coil/bracket assembly from behind
plenum chamber and remove.
8.Remove terminal cover. Note lead positions.
9.Remove 2 nuts securing leads to coil terminals.
10.Remove leads from terminals.
11.Remove 3 Torx screws securing ignition coil to
bracket and remove coil.Refit
12.Fit ignition coil to bracket. Secure with screws.
13.Connect leads to terminals. Secure with nuts.
14.Fit terminal cover.
15.Position ignition coil bracket on inlet manifold
studs.
16.Secure fuel rail and ignition coil bracket with
nuts. Tighten to
8 Nm.
17.Connect multiplug.
18.Connect H.T. leads to respective coil towers.
19.Reconnect battery negative lead.

SFI
9
REPAIR INTAKE AIR TEMPERATURE SENSOR (IAT
SENSOR)
Service repair no - 18.30.09
Remove
1.Disconnect multiplug from IAT sensor.
2.Remove IAT sensor from air cleaner.
Refit
3.Clean sensor and mating face.
4.Fit IAT sensor. Tighten to
8 Nm.
5.Connect multiplug.THROTTLE POSITION SENSOR (TP SENSOR)
Service repair no - 19.22.49
Remove
1.Disconnect multiplug from TP sensor.
2.Remove 2 Torx screws securing TP sensor.
Collect clamp plate.
3.Remove TP sensor.
Refit
4.Clean mating faces.
5.Fit TP sensor. Ensure drive engages correctly
with throttle spindle.
6.Position clamp plate. Secure TP sensor with
Torx screws. Tighten to
2 Nm.
7.Connect multiplug.

19FUEL SYSTEM
10
REPAIR KNOCK SENSOR
Service repair no - 18.30.28 - Sensor - LH
Service repair no - 18.30.30 - Sensor - RH
CAUTION: Due to the sensitivity of the
sensors, do not apply tape or sealant to
sensor threads.
Remove
1.Raise vehicle on ramp.
2. RH Sensor only:Remove bolt securing starter
motor heatshield to RH engine mounting.
3.Release heatshield clip from starter solenoid.
4.Move heatshield aside for access to knock
sensor.
5. Both sensors:
Disconnect sensor multiplug.
6.Remove sensor.
Refit
7.Clean sensor and mating face.
8.Fit sensor. Tighten to
16 Nm.
9.Connect sensor multiplug.
10. RH Sensor only:Manoeuvre heatshield into
position.
11.Secure clip to solenoid.
12.Align bracket to mounting and fit bolt. Fit and
tighten bolt.
13.Lower ramp.
CAUTION: Failure to tighten sensor to
correct torque will result in malfunction or
sensor damage.

SFI
11
REPAIR FUEL PRESSURE REGULATOR
Service repair no - 19.45.06
Remove
1.Disconnect battery negative lead.
2.Depressurise fuel system.
See Fuel System -
Depressurise
3.Position cloth over fuel feed union, slacken union
to release fuel pressure, then re-tighten union.
4.Release fuel return hose clip. Remove fuel
return hose from regulator connecting pipe.
5.Plug connections.
6.Remove 4 nuts ignition coil bracket to inlet
manifold.
7.Release ignition coil bracket from inlet manifold
studs and place aside.
8.Release regulator connecting pipe from clip.
9.Disconnect vacuum hose from fuel pressure
regulator.
10.Remove 2 bolts securing fuel pressure regulator
to fuel rail.
11.Remove fuel pressure regulator assembly.
12.Remove 'O' ring and spacer ring from fuel
pressure regulator. Discard 'O' ring.
13.Release clip and remove connecting pipe from
regulator.
14.Fit plugs to regulator and rail.

19FUEL SYSTEM
12
REPAIR Refit
15.Ensure locations on fuel pressure regulator and
fuel rail are clean.
16.Fit new spacer ring and 'O' ring to fuel pressure
regulator. Lubricate 'O' ring with silicone grease.
17.Fit pressure regulator assembly to fuel rail.
18.Secure regulator connecting pipe in clip.
19.Secure with bolts. Tighten to
10 Nm.
20.Align ignition coil bracket to inlet manifold studs.
21.Secure ignition coil bracket and fuel rail to inlet
manifold with nuts. Tighten to
8 Nm.
22.Remove plugs.
23.Connect return pipe to regulator connecting pipe.
Secure with clip.
24.Connect vacuum hose to fuel pressure regulator.
25.Remove cloth.
26.Reconnect battery negative lead.
27.Start engine. Check for leaks around fuel
pressure regulator, fuel feed and fuel return
unions.IDLE AIR CONTROL (IAC)
Service repair no - 19.22.54
Remove
1.Disconnect battery negative lead.
2.Disconnect IAC multiplug.
3.Remove 2 bolts securing IAC to plenum.
4.Remove IAC.
5.Remove gasket and discard.
Refit
6.Ensure all mating faces are clean.
7.Using a new gasket, fit IAC to plenum. Secure
with bolts. Tighten to
2.3 Nm.
8.Connect multiplug.
9.Reconnect battery negative lead.