Land Rover Fuel Injection System Manual
Here you can view all the pages of manual Land Rover Fuel Injection System Manual. The Land Rover manuals for Automobile are available online for free. You can easily download all the documents as PDF.
Page 31
![Page 31
LAND ROVER
The third is that the cooling system includes a warm water feed to a cha\
mber directly under the
injection plenum. This assists engine operation by increasing the temper\
ature of the plenum during
cold conditions – which increases the ability to vaporise fuel. The w\
ater supply is taken from the
engine intake manifold (front, passenger side close to injector 1) and\
the return feed is connected
via a hose directly to a port on the radiator.
Idle control system
The notorious...](http://img.usermanuals.tech/thumb/2848/48521/w300_land-rover-fuel-injection-system-30.png "Page 31
LAND ROVER
The third is that the cooling system includes a warm water feed to a cha\
mber directly under the
injection plenum. This assists engine operation by increasing the temper\
ature of the plenum during
cold conditions – which increases the ability to vaporise fuel. The w\
ater supply is taken from the
engine intake manifold (front, passenger side close to injector 1) and\
the return feed is connected
via a hose directly to a port on the radiator.
Idle control system
The notorious...")
LAND ROVER The third is that the cooling system includes a warm water feed to a cha\ mber directly under the injection plenum. This assists engine operation by increasing the temper\ ature of the plenum during cold conditions – which increases the ability to vaporise fuel. The w\ ater supply is taken from the engine intake manifold (front, passenger side close to injector 1) and\ the return feed is connected via a hose directly to a port on the radiator. Idle control system The notorious...
Page 32
![Page 32
LAND ROVER
air rubber hose fouled the PCV oil separator.
The first problem was that the unadjusted base idle speed for the inject\
ion system was much too
high. The base idle is the speed the engine will run at when the throttl\
e is closed and the fuel
injection idle circuit is disabled. It is specified by Land Rover as 520\
RPM (+/-25RPM).
It is absolutely vital that the base idle speed is checked on a new inst\
allation.
In order to set the base idle, the engine is first run up to full...](http://img.usermanuals.tech/thumb/2848/48521/w300_land-rover-fuel-injection-system-31.png "Page 32
LAND ROVER
air rubber hose fouled the PCV oil separator.
The first problem was that the unadjusted base idle speed for the inject\
ion system was much too
high. The base idle is the speed the engine will run at when the throttl\
e is closed and the fuel
injection idle circuit is disabled. It is specified by Land Rover as 520\
RPM (+/-25RPM).
It is absolutely vital that the base idle speed is checked on a new inst\
allation.
In order to set the base idle, the engine is first run up to full...")
LAND ROVER air rubber hose fouled the PCV oil separator. The first problem was that the unadjusted base idle speed for the inject\ ion system was much too high. The base idle is the speed the engine will run at when the throttl\ e is closed and the fuel injection idle circuit is disabled. It is specified by Land Rover as 520\ RPM (+/-25RPM). It is absolutely vital that the base idle speed is checked on a new inst\ allation. In order to set the base idle, the engine is first run up to full...
Page 33
![Page 33
LAND ROVER
Figure 36 – Idle air supply pipe (red) – no longer used
While this solution did resolve the problem of the original hose fouling\
the PCV oil separator, it
came with the disadvantage that the amount of air entering the idle circ\
uit was proportionally
reduced due to the smaller diameter of the copper pipe. Testing revealed\
a low idle speed –
typically 200RPM lower than expected by the 14CUX, and so the ECU routin\
ely reported fault code
17.
The idle air flow pipe was therefore...](http://img.usermanuals.tech/thumb/2848/48521/w300_land-rover-fuel-injection-system-32.png "Page 33
LAND ROVER
Figure 36 – Idle air supply pipe (red) – no longer used
While this solution did resolve the problem of the original hose fouling\
the PCV oil separator, it
came with the disadvantage that the amount of air entering the idle circ\
uit was proportionally
reduced due to the smaller diameter of the copper pipe. Testing revealed\
a low idle speed –
typically 200RPM lower than expected by the 14CUX, and so the ECU routin\
ely reported fault code
17.
The idle air flow pipe was therefore...")
LAND ROVER Figure 36 – Idle air supply pipe (red) – no longer used While this solution did resolve the problem of the original hose fouling\ the PCV oil separator, it came with the disadvantage that the amount of air entering the idle circ\ uit was proportionally reduced due to the smaller diameter of the copper pipe. Testing revealed\ a low idle speed – typically 200RPM lower than expected by the 14CUX, and so the ECU routin\ ely reported fault code 17. The idle air flow pipe was therefore...
Page 34
![Page 34
LAND ROVER
Figure 37 – Idle air supply pipe (red) – finalised
The figure above shows the two rubber joining hoses coupling a red 15mm \
copper pipe formed to
avoid fouling the PCV separator.
There are two more general observations that follow
1. The first is that the engine management switch to hunt mode is direc\
tly linked to the output from the transmission road speed transducer. The 14CUX repeatedly waits \
until the vehicle
comes to a stop (with a slight pause) before implementing the...](http://img.usermanuals.tech/thumb/2848/48521/w300_land-rover-fuel-injection-system-33.png "Page 34
LAND ROVER
Figure 37 – Idle air supply pipe (red) – finalised
The figure above shows the two rubber joining hoses coupling a red 15mm \
copper pipe formed to
avoid fouling the PCV separator.
There are two more general observations that follow
1. The first is that the engine management switch to hunt mode is direc\
tly linked to the output from the transmission road speed transducer. The 14CUX repeatedly waits \
until the vehicle
comes to a stop (with a slight pause) before implementing the...")
LAND ROVER Figure 37 – Idle air supply pipe (red) – finalised The figure above shows the two rubber joining hoses coupling a red 15mm \ copper pipe formed to avoid fouling the PCV separator. There are two more general observations that follow 1. The first is that the engine management switch to hunt mode is direc\ tly linked to the output from the transmission road speed transducer. The 14CUX repeatedly waits \ until the vehicle comes to a stop (with a slight pause) before implementing the...
Page 35
![Page 35
LAND ROVER
loom simply contains a half watt resistor in a plastic case. The value o\
f the resistor defines the
mode of operation – with the following options …
l 180 ohms – Australia rest of world
l 470 ohms – UK and Europe non catalyst
l 910 ohms – Saudi non catalyst
l 3900 ohms – USA and Europe catalyst
Non catalytic operation is much simpler in the sense that no extra exhau\
st sensors are required –
but this mode of operation has the significant disadvantage that the sys\
tem...](http://img.usermanuals.tech/thumb/2848/48521/w300_land-rover-fuel-injection-system-34.png "Page 35
LAND ROVER
loom simply contains a half watt resistor in a plastic case. The value o\
f the resistor defines the
mode of operation – with the following options …
l 180 ohms – Australia rest of world
l 470 ohms – UK and Europe non catalyst
l 910 ohms – Saudi non catalyst
l 3900 ohms – USA and Europe catalyst
Non catalytic operation is much simpler in the sense that no extra exhau\
st sensors are required –
but this mode of operation has the significant disadvantage that the sys\
tem...")
LAND ROVER loom simply contains a half watt resistor in a plastic case. The value o\ f the resistor defines the mode of operation – with the following options … l 180 ohms – Australia rest of world l 470 ohms – UK and Europe non catalyst l 910 ohms – Saudi non catalyst l 3900 ohms – USA and Europe catalyst Non catalytic operation is much simpler in the sense that no extra exhau\ st sensors are required – but this mode of operation has the significant disadvantage that the sys\ tem...
Page 36
![Page 36
LAND ROVER
Figure 38 – Welding lambda sensor threads into the exhaust downpipes
Bench testing the electrical wiring loom for the ECU
The wiring loom taken from the donor vehicle was in generally good condi\
tion. Nonetheless, a
number of wires close to the 14CUX harness plug had been cut, and some s\
ignal lines were broken
perhaps due to the flexing incurred in removing the loom as one complete\
piece. Both main and
fuel relays had been included in the loom along with the primary connect\...](http://img.usermanuals.tech/thumb/2848/48521/w300_land-rover-fuel-injection-system-35.png "Page 36
LAND ROVER
Figure 38 – Welding lambda sensor threads into the exhaust downpipes
Bench testing the electrical wiring loom for the ECU
The wiring loom taken from the donor vehicle was in generally good condi\
tion. Nonetheless, a
number of wires close to the 14CUX harness plug had been cut, and some s\
ignal lines were broken
perhaps due to the flexing incurred in removing the loom as one complete\
piece. Both main and
fuel relays had been included in the loom along with the primary connect\...")
LAND ROVER Figure 38 – Welding lambda sensor threads into the exhaust downpipes Bench testing the electrical wiring loom for the ECU The wiring loom taken from the donor vehicle was in generally good condi\ tion. Nonetheless, a number of wires close to the 14CUX harness plug had been cut, and some s\ ignal lines were broken perhaps due to the flexing incurred in removing the loom as one complete\ piece. Both main and fuel relays had been included in the loom along with the primary connect\...
Page 37
![Page 37
LAND ROVER
Figure 39 – Original loom connector layout in donor vehicle
The original layout reflected the needs of the donor vehicle. Due to the\
changes in orientation of
the plenum, these changed when fitted to the target vehicle.
http://www.conehead.org/Projects/Landrover/EFi/efi%20-%20web.htm (37 of\
55)16/10/2010 9:03:18 a.m.](http://img.usermanuals.tech/thumb/2848/48521/w300_land-rover-fuel-injection-system-36.png "Page 37
LAND ROVER
Figure 39 – Original loom connector layout in donor vehicle
The original layout reflected the needs of the donor vehicle. Due to the\
changes in orientation of
the plenum, these changed when fitted to the target vehicle.
http://www.conehead.org/Projects/Landrover/EFi/efi%20-%20web.htm (37 of\
55)16/10/2010 9:03:18 a.m.")
LAND ROVER Figure 39 – Original loom connector layout in donor vehicle The original layout reflected the needs of the donor vehicle. Due to the\ changes in orientation of the plenum, these changed when fitted to the target vehicle. http://www.conehead.org/Projects/Landrover/EFi/efi%20-%20web.htm (37 of\ 55)16/10/2010 9:03:18 a.m.
Page 38
![Page 38
LAND ROVER
Figure 40 – New loom layout suited to the target engine bay
http://www.conehead.org/Projects/Landrover/EFi/efi%20-%20web.htm (38 of\
55)16/10/2010 9:03:18 a.m.](http://img.usermanuals.tech/thumb/2848/48521/w300_land-rover-fuel-injection-system-37.png "Page 38
LAND ROVER
Figure 40 – New loom layout suited to the target engine bay
http://www.conehead.org/Projects/Landrover/EFi/efi%20-%20web.htm (38 of\
55)16/10/2010 9:03:18 a.m.")
LAND ROVER Figure 40 – New loom layout suited to the target engine bay http://www.conehead.org/Projects/Landrover/EFi/efi%20-%20web.htm (38 of\ 55)16/10/2010 9:03:18 a.m.
Page 39
![Page 39
LAND ROVER
The new layout was ideally suited to the target vehicle. Exposed loom se\
ctions were rewrapped
using self amalgamated tape.
Figure 41 – ECU Connector layout and numbering (and tune R)
Figure 42 – Injector electrical connectors
http://www.conehead.org/Projects/Landrover/EFi/efi%20-%20web.htm (39 of\
55)16/10/2010 9:03:18 a.m.](http://img.usermanuals.tech/thumb/2848/48521/w300_land-rover-fuel-injection-system-38.png "Page 39
LAND ROVER
The new layout was ideally suited to the target vehicle. Exposed loom se\
ctions were rewrapped
using self amalgamated tape.
Figure 41 – ECU Connector layout and numbering (and tune R)
Figure 42 – Injector electrical connectors
http://www.conehead.org/Projects/Landrover/EFi/efi%20-%20web.htm (39 of\
55)16/10/2010 9:03:18 a.m.")
LAND ROVER The new layout was ideally suited to the target vehicle. Exposed loom se\ ctions were rewrapped using self amalgamated tape. Figure 41 – ECU Connector layout and numbering (and tune R) Figure 42 – Injector electrical connectors http://www.conehead.org/Projects/Landrover/EFi/efi%20-%20web.htm (39 of\ 55)16/10/2010 9:03:18 a.m.
Page 40
![Page 40
LAND ROVER
Injector wiring is banked as two banks of four (one bank on the passeng\
er side of the engine, and
one on the driver side).
Figure 43 – Exhaust Lambda electrical connectors
http://www.conehead.org/Projects/Landrover/EFi/efi%20-%20web.htm (40 of\
55)16/10/2010 9:03:18 a.m.](http://img.usermanuals.tech/thumb/2848/48521/w300_land-rover-fuel-injection-system-39.png "Page 40
LAND ROVER
Injector wiring is banked as two banks of four (one bank on the passeng\
er side of the engine, and
one on the driver side).
Figure 43 – Exhaust Lambda electrical connectors
http://www.conehead.org/Projects/Landrover/EFi/efi%20-%20web.htm (40 of\
55)16/10/2010 9:03:18 a.m.")
LAND ROVER Injector wiring is banked as two banks of four (one bank on the passeng\ er side of the engine, and one on the driver side). Figure 43 – Exhaust Lambda electrical connectors http://www.conehead.org/Projects/Landrover/EFi/efi%20-%20web.htm (40 of\ 55)16/10/2010 9:03:18 a.m.