van wont change from petrol to lpg

[davey1]

my 2005 lpg transit changed from lpg to petrol its self while i was driving (plenty of gas in tank) and will not change back to lpg now

[Dualtech]

Hi, does it behave as if it has run out of gas?
also, which system is fitted?
Cheers, Mick

[davey1]

Hi,

havent had the van long and never ran out of gas.....but i assume its similar because it swapped from gas to petrol automatically and wont swap back. when it happened the switch on dash didnt light up when i pressed it,,,,i checked fuses and one was blown so now light on switch comes on but it still doesnt swap over to gas......not sure what type it is

thanks

[Dualtech]

Would be worth checking that the solenoids are opening, should be one on tank and another under the bonnet at the filter shut off valve. Its possible that a bad coil could have caused the fuse to blow. If you power up the coils with 12volts then you should hear a click from each one. If there is no click then the valve isnt opening and the lpg cant flow.