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hi all.i have a range rover hse 4.6 sport on a r plate with lpg conversion,my question is.when i switch to lpg the engine idols and then cuts out but not all the time,anyone have any ideas,cheers Paul

pandy said:

hi all.i have a range rover hse 4.6 sport on a r plate with lpg conversion,my question is.when i switch to lpg the engine idols and then cuts out but not all the time,anyone have any ideas,cheers Paul

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:welcome2:sounds like a fuel starvation problem.have you had car long?has lpg system been serviced?

does it do it from cold and warmed up ?

hi nathan.it does it hot or cold but not all the time.Paul.

hi steve.only had it a couple of weeks so no idea about service.Paul.

thort it may have only dun it from cold, how long u had the r/r? has it always dun since you had it?

had it a couple of weeks,it seemed fine till this wk end.

Id be inclined to put new leads n plugs in it speshly if u dont know when it was last serviced, lpg likes em to be in optimal condition

thanx nathan i give it a go.

pandy said:

hi all.i have a range rover hse 4.6 sport on a r plate with lpg conversion,my question is.when i switch to lpg the engine idols and then cuts out but not all the time,anyone have any ideas,cheers Paul

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you don't have a 4.6 sport, they dont exist!! especially on an r plate.

you need to find out the name of the lpg controller, if its a leonardo 175 then you will need to look at the setting for it. sounds like its lost power and cleared the memory.

hi gav.on log book it says 4.6 hse auto.was just going by wots on the tail gate,4.6 sport.as for the lpg it just doesnt work at all now,as im driving and switch over it just dies until i switch back to petrol.

hi

i has similar problems awhile back and mine turned out to be the mass air flow meter and in need of a service, mine was a single point lpg system tho

pandy said:

hi gav.on log book it says 4.6 hse auto.was just going by wots on the tail gate,4.6 sport.as for the lpg it just doesnt work at all now,as im driving and switch over it just dies until i switch back to petrol.

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assuming it has fuel, only way to be sure is to go fill it up, the lpg guage is a down right liar and nobody i know or know of has an accurate one.

once you have fuel you need to establish its getting through properly. way to do it on single point is find the tube that goes from the vapouriser to the air intake, there should be a manual or leccy valve on ther (actuator if its leccy)
take the jubilee clip off so you can seperate the pipe, start the car on petrol, the open the pipe and rev it (i do it via the cruise control bubble thing near eas box) it should attempt to change over and you should hear gas flowing. if not check solonoids click when it changes over, there should be two or three, one at tanks and one at the vap and maybe one elsewhere on the fuel line (liquid line).

also if it has the leccy valve, trace the wires, you will prolly find the ecu near the engine ecu/battery area, mebbe even inside the engine ecu box!

take a few piccys and let us know!

just an update gav.lpg just started working again 2day weird.

i would check any wiring you can find, sounds like a loose connection mebbe on one of the solenoids!