Tonks4x4
Active Member
- Posts
- 234
- Location
- Huthwaite, Nottinghamshire
Range Rover classic flapper type injection system.
I have lost the will to live with this install. How hard can it be there is only 4 wires????
I have checked everything I can think of apart from setting fire to it...
Live feed 12v to efi loom (Brown Wire)
Ignition live 12v to efi loom (White wire)
Start signal wire to efi loom (Red/White wire)
Feed to fuel pump (White/purple wire)
all earths are clean and correct.
I have tested the following items on another vehicle to make sure they run.
2 x ECU's
3 x Air flow meter's
3 x Resistor packs
3 x coils (various types of ballast non ballast)
2 x complete efi looms
The engine cranks.
The dizzy is giving a pulse signal. (checked on an ocilloscope)
The coil is triggering and giving a spark to all 8 cylinders.
The engine has good compression
The fuel pump runs and is piped up the correct way (ie it retains good pressure in the rail)
When cranking the 9th injector opens and allows presurised fuel as a mist into the plenum.
I have tested and swapped several times the 3 relays and the electronic bridge (Red relay like unit)
Injectors have a live feed to them when ignition on.
Continuity tested each and every wire
BUT WILL IT OPEN THE INJECTORS TO LET FUEL IN?????????????????????
No will it hell.....
I am not getting the earth trigger to the injectors (Pins 28,29,30,31) on ecu to allow fuel to pass.
What am I missing???? please help.
I can manually earth the injectors to pass fuel and it will run for about 10 to 20 seconds obviously I am not quick enough to keep up the pulsing....
Brian
I have lost the will to live with this install. How hard can it be there is only 4 wires????
I have checked everything I can think of apart from setting fire to it...
Live feed 12v to efi loom (Brown Wire)
Ignition live 12v to efi loom (White wire)
Start signal wire to efi loom (Red/White wire)
Feed to fuel pump (White/purple wire)
all earths are clean and correct.
I have tested the following items on another vehicle to make sure they run.
2 x ECU's
3 x Air flow meter's
3 x Resistor packs
3 x coils (various types of ballast non ballast)
2 x complete efi looms
The engine cranks.
The dizzy is giving a pulse signal. (checked on an ocilloscope)
The coil is triggering and giving a spark to all 8 cylinders.
The engine has good compression
The fuel pump runs and is piped up the correct way (ie it retains good pressure in the rail)
When cranking the 9th injector opens and allows presurised fuel as a mist into the plenum.
I have tested and swapped several times the 3 relays and the electronic bridge (Red relay like unit)
Injectors have a live feed to them when ignition on.
Continuity tested each and every wire
BUT WILL IT OPEN THE INJECTORS TO LET FUEL IN?????????????????????
No will it hell.....
I am not getting the earth trigger to the injectors (Pins 28,29,30,31) on ecu to allow fuel to pass.
What am I missing???? please help.
I can manually earth the injectors to pass fuel and it will run for about 10 to 20 seconds obviously I am not quick enough to keep up the pulsing....
Brian