funny idling

In my somewhat un-educated opinion it sounds like it could just be tuning. Look/ask around for a gas tuning specialist - not just somewhere that installs the gas systems.

laura B,

I too have an 80LC petrol/gas and the same thing happens to me. Usually it just needs the gas mixture resetting and this should be done every 20000ks or so. It should only take you gas mechanic about 10 to 15 minutes to fix. My bloke only charges about $30 for a simple gas retune Sometimes you will get a crook batch of gas particularly if you buy at discount fuel outlets like burmha etc. Stick to quality outlets like Shell, BP, Caltex etc.

laura B,
When this happens to mine (4.5lt) its usually on both fuels. The computer gets a bit confused and needs to be reset by doing the following;

At the fuse box under the dash find the Engine fuse.
With the engine on petrol start it and rev it up to about 2000rpm and hold it there at the same time remove the engine fuse. Hold the engine at 2000rpm for about 30 seconds. Turn the engine/ignition off completely. Reinstall the fuse and start the engine, it should come back to normal. Sometimes I've had to do this more than once.

Hi, My 80 is starting to do this now and then but it needs the mixer cleaned out. This is supposed to be done every 30,000km as it gets dirt and crap from the gas in it. Mine has done 40,000km. If you don't get this cleaned out it can completely stuff the mixer unit about $400 to replace. My gas bloke showed me one that hadn't been cleaned out what a mess!!
Personally I would never pull the efi fuse when the enging is running just do it when it is off with the accessories off as well, wait 30secs and re install. It is possible (i've been told) that if you do it with the engine running you can cause a surge to the computer you do the $math on that one.
Regards
Tour Boy

check that lcool.com.au website as a mate of mine in cairns just fixed that problem with some orings or something in the trottle body. I don't know all the details but he just typed 80 series landcruiser idle problem into google and it came straight up with all the instructions. So he went and got the orings required and said it fixed it straight away.

Did a clown do the last tune up?
They're pretty funny!!!!