funny idling

Submitted: Wednesday, Feb 08, 2006 at 23:23
ThreadID: 30587 Views:1195 Replies:6 FollowUps:1
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hi, got an 80 on lpg/petrol and just wanting to know if its normal for it to idle funny ( pretty sure its only on lpg - always gone fine on petrol), not all the time but sometimes when i pull up at a set of lights it will idle at 200-400rpm and even when we start it it revs are up about 1200 . it drives fine and like i said its not all the time!!
Can anyone tell me if this is normal or not and if it can be fixed without spending big bucks!! we have had it since sept05 and did have something fixed on it because it was its not so bad...the girl has only gone 250,000km!
Laura B

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Reply By: ellmcg - Thursday, Feb 09, 2006 at 00:02

Thursday, Feb 09, 2006 at 00:02
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.
AnswerID: 153983

Reply By: dinodog- Central Coast NSW - Thursday, Feb 09, 2006 at 09:36

Thursday, Feb 09, 2006 at 09:36
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.
AnswerID: 154024

Reply By: Rod W - Thursday, Feb 09, 2006 at 10:47

Thursday, Feb 09, 2006 at 10:47
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.
AnswerID: 154031

Reply By: tour boy - Thursday, Feb 09, 2006 at 12:22

Thursday, Feb 09, 2006 at 12:22
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.
Tour Boy
AnswerID: 154051

Reply By: DesC - Thursday, Feb 09, 2006 at 18:15

Thursday, Feb 09, 2006 at 18:15
check that 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.
AnswerID: 154119

Reply By: dieselup - Thursday, Feb 09, 2006 at 20:13

Thursday, Feb 09, 2006 at 20:13
Did a clown do the last tune up?
They're pretty funny!!!!
AnswerID: 154137

Follow Up By: Redback - Thursday, Feb 09, 2006 at 23:13

Thursday, Feb 09, 2006 at 23:13
I laughed, oh how i laughed ;-)))
FollowupID: 408116

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