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AuthorTopic: Wiring LPG on a Flapper EFI system  (Read 2247 times)

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Offline Greybeard

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Wiring LPG on a Flapper EFI system
« on: May 27, 2006, 15:11:21 »
Please can someone tell me which wires i need to cut into on a 1989 3.5 efi with flapper injection system. The Haynes manual is wrong and i have checked 3 of them , the wires are located in the drivers footwell. On my 3.9 with hot wire they are the correct yellow colour, on this 3.5 the wires are a completelu different colour.


HELP !!!!!!!!!!   :(  :(  :(  :(


Steve

Sorry it doesnt explain very well does it, the wires i need are the injector cut wires.   :oops:  :oops:  :oops:  :oops:  :oops:  :oops:
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1999 Disco V8i  mmmmm  nice. LPG Conv.
1990 3.9i Vogue SE offroader.
2" suspension lift including Shock mounts.
OMVL LPG Kit, 10 Bolt Heads, 2" Body lift.
265 x 85 x 16 Grizzly Claws. MPS 4x4 Steering Guard.
SuperWinch EPi9, First 4x4 Winchbumper.
Braided brake lines. Sraight Thru pipe instead of back box for that delicious noise , mmmmm !!!!

Offline Range Rover Blues

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Wiring LPG on a Flapper EFI system
« Reply #1 on: May 31, 2006, 12:29:42 »
Is this sothat the LPG can cut the injectors off? if so my system is installed next to the injector relay (again on a hot-wire).

Have you tried following the pin-out from the ECU?
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Blue,  1988  Range Rover 3.5 EFi with plenty of toys bolted on
Chuggaboom, 1995 Range Rover Classic
1995 Range Rover Classic Vogue LSE with 5 big sticks of Blackpool rock under the bonnet.

Offline Greybeard

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Wiring LPG on a Flapper EFI system
« Reply #2 on: May 31, 2006, 12:43:42 »
It is the injector cut out yes. This is where i have the problem as i do not have a wiring diagram showing the correct info. It is on a Flapper system not hotwire.
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1999 Disco V8i  mmmmm  nice. LPG Conv.
1990 3.9i Vogue SE offroader.
2" suspension lift including Shock mounts.
OMVL LPG Kit, 10 Bolt Heads, 2" Body lift.
265 x 85 x 16 Grizzly Claws. MPS 4x4 Steering Guard.
SuperWinch EPi9, First 4x4 Winchbumper.
Braided brake lines. Sraight Thru pipe instead of back box for that delicious noise , mmmmm !!!!

Offline jjsaul

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Wiring LPG on a Flapper EFI system
« Reply #3 on: June 15, 2006, 21:48:36 »
we tried to do this on my RRC (1986 flapper)

gave up in the end and took it to a specialist  :roll:
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James

...lovin dirty days out...

1983 OneTen V8 Station Wagon 3.5 (LPG)
1972 Range Rover V8
1992 Range Rover 4.6 (LPG)
1978 Range Rover Carmichael Commando 6x4
1972 Range Rover - Major project, FOR SALE
1976 Range Rover - Less of a project, FOR SALE
Previously: Range Rovers 1988, 1990 and others...
2005 Volvo V70 T5 SE (LPG) - daily driver

Snake110

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Wiring LPG on a Flapper EFI system
« Reply #4 on: June 17, 2006, 01:59:15 »
AFIK you can cut the brown wire with orange tracer off the main
relay under youre seat to isolate the injectors
pop a relay in there so on switching the relay
you cut off the injectors but use the same
feed to open the gas solenoyds
this allows the ecu/fuel pump to remain active
thus keeping a supply of fuel circulating
round the injectors thus keeping em cool.
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