105 Landcruiser Not Firing

Submitted: Friday, Apr 28, 2017 at 19:54

ThreadID: 134758 Views:13219 Replies:7 FollowUps:20

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Member - ACD 1

HELP! My 105 Series Landcruiser refuses to fire.

I am researching LCOOL for help on this as well.

It will turn over but just won't fire. It was purchased new by me and has been regularly serviced by the same Toyota Dealership. It has been well looked after and has never had major repair or breakdown until now and has always been treated well and never thrashed.

It has a new battery (3 months) and is well charged. Filters (air and fuel) replaced recently. Fuel is fresh - have used about 60 lt out of 170 lt longrange tank no recent refills and is taken from same service station when in town.

This happened twice about 3 months ago and Autoclub played with it for about an hour each time and could find no reason why. All of a sudden it fired.

Started Monday morning, drove 10km to town. Went to start again and it just kept turning over. Auto club came and it started. Drove 300 metres to pick wife up - just turned over and wouldn't fire. Towed to Toyota and it started the next day. They they have spent 3 days trying to get it to replicate the problem.

Any ideas?

Have checked the following:

Battery (3 mths old and good charge), filters (good condition and regularly replaced), engine circuit breaker, fuel shutoff circuit breaker, fuel getting to injectors, glows energised and getting hot (not that you should need them with the warm weather we've had and it seems to happen while the vehicle is hot), immobiliser is factory (vehicle alarm immobiliser is not connected), all fuses ok,

It is an old school diesel - if it turns over and has fuel t should go!

Any ideas on where to look? - can't afford to have an intermittent fault.

Cheers

Anthony

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Reply By: PhilD - Friday, Apr 28, 2017 at 20:23

Reply By: Whirlwinder - Friday, Apr 28, 2017 at 20:50

Friday, Apr 28, 2017 at 20:50

Mate, that same thing happened to a mates Prado. Try another key in case the first one is not being recognized by the immobilizer.
Good luck.
Ian

AnswerID: 610663

Follow Up By: rumpig - Friday, Apr 28, 2017 at 21:02

Friday, Apr 28, 2017 at 21:02

It's not likely the key, it's most likely the immobiliser (black box mentioned above) and is a very common problem once the 1HZ powered 105's get to this age. You can bypass the immobiliser, if you send me a P.M on LCOOL forum with your email address (or list it here if you like), I will send you instructions (complete with pics) of how to bypass the immobiliser....I had a thread on LCOOL that was all about bypassing the immobiliser, but a mod there carried on like I was going to be responsible for every 105 in Australia getting stolen because I showed how to bypass it (yeah like it's a 5 minute job to do), so I removed the thread. Next time it plays up, pour a bottle of cold water on it, should start straight away.
Same thing happened to me whilst on holidays in Tasmania, it suddenly wouldn't start after working fine, no previous symptoms at all, and slowly gets worse / more common to happen.
In a nut shell, you need to remove the black box or break into it....inside is a solenoid (that you don't want to damage) with a wire bolted on top of if. You need to remove that wire and take the purple wire that runs from the loom to the black box, and attach that purple wire onto the solenoid. It will become clear when I send you the pics of when I did mine, worst part is not knowing what's inside that black box...once you know what's in there it's a simple process. Only downside is you won't have an immobiliser on your vehicle once you do this mod, but vehicle runs fine without it.

FollowupID: 880595

Follow Up By: Member - ACD 1 - Friday, Apr 28, 2017 at 21:39

Friday, Apr 28, 2017 at 21:39

Thanks for the reply Ian.

We did try one other keys thinking it may be the chip inside - no go unfortunately. But it was the Valet Key - will try another one.

Cheers

Anthony

FollowupID: 880598

Follow Up By: Member - ACD 1 - Friday, Apr 28, 2017 at 21:49

Friday, Apr 28, 2017 at 21:49

Thanks for the reply rumpig.

That would be great if you can send it through to me. I tried to log into LCOOL, but I can't remember either the password or username. Will have to follow up.

Email is aDOTcDOTdeanATbigpondDOTnetDOTau - just replace the DOT and AT as appropriate.

EDIT- just had a thought, I can connect the immobiliser in the alarm and that will compensate for removing the factory one.

Cheers

Anthony

FollowupID: 880600

Follow Up By: rumpig - Friday, Apr 28, 2017 at 22:17

Friday, Apr 28, 2017 at 22:17

Just sent the email now Anthony, let me know if you don't get it

FollowupID: 880602

Follow Up By: Member - ACD 1 - Friday, Apr 28, 2017 at 22:33

Friday, Apr 28, 2017 at 22:33

No nothing yet rumpig!

I have checked the email above and it is correct (with the substitutions).

Also tried to logon and then register for LCOOL - it says my email is in use so I just need to sort it out with the admin - if I can find an email to contact them.

Cheers

Anthony

FollowupID: 880603

Follow Up By: rumpig - Saturday, Apr 29, 2017 at 08:19

Saturday, Apr 29, 2017 at 08:19

Yeah sorry mate, I was half asleep and didn't notice a spelling mistake I made in your name as I was viewing on my phone, so it came back undelivered. Just resent it again, hopefully second time lucky with the right spelling.

FollowupID: 880612

Follow Up By: Member - ACD 1 - Saturday, Apr 29, 2017 at 11:43

Saturday, Apr 29, 2017 at 11:43

Thanks rumpig

Came through no problems

Cheers

Anthony

FollowupID: 880622

Reply By: Member -Pinko (NSW) - Friday, Apr 28, 2017 at 21:15

Reply By: Been-Everywhereman - Sunday, Apr 30, 2017 at 08:55

Reply By: Athol W1 - Sunday, Apr 30, 2017 at 09:47

Reply By: Member - Phil G (SA) - Sunday, Apr 30, 2017 at 22:03

Sunday, Apr 30, 2017 at 22:03

The other cause might be air getting sucked into the fuel line. Happens if the hoses at the fuel filter are getting loose or cracked, or rarely if there is a fine crack in the plastic fitting at the bottom of the filter.

AnswerID: 610700

Follow Up By: Member - ACD 1 - Monday, May 01, 2017 at 09:55

Monday, May 01, 2017 at 09:55

Thanks for the reply Phil

It would be great if it was that simple however, not sure if this is the cause in my case as there is no evidence of fuel weeping from any of the hoses. Also, I removed the hoses at the fuel filter when it happened and had to use pliers to squeeze the clamp open. Usually, I can do it with my fingers.

These are the things I will check before I take a more drastic approach. I will add it to the list of things for the mechanics to check this morning when I go in.

Cheers

Anthony

FollowupID: 880657

Follow Up By: Member - Phil G (SA) - Monday, May 01, 2017 at 12:02

Monday, May 01, 2017 at 12:02

Gday Anthony,
The fuel will not weep because the fuel is drawn by the injection pump, so is never under positive pressure. But it draws air into the line when the vehicle is running. When you stop the vehicle the air collects at the highest point and there will be enough to stop the vehicle from firing. Usually starts after pumping the black button on the top of the filter. Worth trying next time you can't start it.
Seen/heard it happen to a few people over the years. One guy put up with it for about a year before someone replaced the fuel filter housing - the plastic bit in the bottom had a microscopic crack in it, but fine cracks in the hose and those simple clamps can let air past too.

FollowupID: 880661

Follow Up By: Member - Phil G (SA) - Monday, May 01, 2017 at 12:07

Monday, May 01, 2017 at 12:07

Heres a little reading:
Google Search on air in fuel line

FollowupID: 880662

Follow Up By: rumpig - Monday, May 01, 2017 at 13:12

Monday, May 01, 2017 at 13:12

I know you probably hope it's not the immobiliser Anthony, but atleast a dozen people on LCOOL forum in the last 2 years have had me email that bypass instructions to them that I sent you, because their immobilisers had died also (I know of quite a few others that have bypassed theirs without my help aswell). I'll be very surprised if it's not your problem, but doesn't hurt to explore other avenues....as I mentioned previous, it's a pretty common failure.

FollowupID: 880665