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LPG cutoff hardwired to switch 


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 Post subject: LPG cutoff hardwired to switch
Posted: Fri Sep 08, 2017 6:17 pm 
Fordmods Newbie

Age: 33

Posts: 1

Joined: 8th Sep 2017

Ride: Falcon Supercab AU

Location: Sydney
NSW, Australia

Hi guys, bought a factory LPG falcon AU ute a week ago. Found it odd it had a switch to engage/disengage the cut-off to the tanks.

Had a look under the bonnet and he's poorly wired in a switch from the 12v cutoff solenoid on the converter to the loom, essentially bypassing it manually when i start/stop the car. Dangerous for a number of reasons as I'm sure you can imagine.

I've tried to rectify it..

-Connected solenoid as per stock - no go - maybe broken solenoid?
-Bought new solenoid and pin - connected them - but gas tanks never engage
-Bought new wiring look for the converter (3x 2pin plugs, 1x3pin plug, 1x4pin plug) - connected it all up but still no go.

Don't really know what else I can do?

When the switch is wired in to the positive(+) of the 12v cutoff solenoid, it functions fine (by the switch), however, it doesn't seem to work at all without that switch.

Is there a fuse or relay im missing here possibly?
 Post subject: Re: LPG cutoff hardwired to switch
Posted: Fri Sep 08, 2017 10:15 pm 
Stock as a Rock

Age: 70

Posts: 146

Joined: 4th Feb 2016

Location: australia
VIC, Australia

Being a dedicated gas engine there should be an lpg relay and fuse, when the engine cranks the pcm will supply the ground to energize the lpg relay when it receives a crank signal from the crank sensor.

This will then close the main relay contacts and supply battery pos to your lock offs and tanks. Get your self a wiring schematic.
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