Does Landcruiser 100 series 1HZ have a computer chip?
Submitted: Sunday, Jan 27, 2008 at 22:07
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Rowen
Howdy folks...
having a good long w/e?
Um, as per question in the topic, do the 1HZ's have a computer chip. If so, when did they come in? I have an 80 series with ~year 2000 100 series 1HZ. real happy with it but curious...
Cheers in advance...
Ro
Reply By: Member - DOZER- Monday, Jan 28, 2008 at 09:52
Monday, Jan 28, 2008 at 09:52
The 1hz is still an old technology fuel system, but even it has had some chips hung off it...the 105 is full of chips that run all sorts of things, but not the fuel system.
To point out the difference....a friend swamped his 2003 1hz gxl in a river....he pulled it out of the river with aid of a tractor and camped by the creek 3 days before driving it 250kms
home....he was draining the water trap every 10kms, but he made it
home.....pity insurance wrote it off and then onsold it, bodywork undamaged for 15k to someone who knew how to dry it out. It had water in everything. The only things that obviously didnt work properly were the door locks and windows.
A hdfte would still be besides the river, or would have needed towing further to where a towtruck could get to it.
Andrew hdft 80 series
AnswerID:
284041
Reply By: Steve from Top End Explorer Tours - Monday, Jan 28, 2008 at 11:55
Monday, Jan 28, 2008 at 11:55
The answer is NO they don't have a computer chip as I first suggested.
Especially the 2000 model I have 3 2000 plated engines in my front yard 1 in an 105 series 1 in a Troopy and one out of a Troopy I wrecked last year, None of them have a computer chip, The 2002 and 2003 105 series I own don't have a computer chip either.
The 2003 Has the TPS valve, I believe is called a Throttle Position Sensor Valve, these are manually adjusted as this is what they did to my car in
cairns 4 weeks ago.
Cheers Steve.
AnswerID:
284072
Follow Up By: Member - Matthew ,United Fuel- Monday, Jan 28, 2008 at 14:06
Monday, Jan 28, 2008 at 14:06
Steve
Not wanting to cause arguments but remove the glovebox on a TPS/EGR equipped 100/105 series and you will find the EGR control module which acts on the vacuum soleniods that operate the DAC on top of the pump.Remove the vacuum line that goes to the base of the DAC and
test drive the vehicle and report back to me your findings.
They also have a TCV fitted to the base of the fuel pump that is controlled by the same controller.
These are the FACTS.
MAtt
FollowupID:
548831
Follow Up By: Steve from Top End Explorer Tours - Monday, Jan 28, 2008 at 14:27
Monday, Jan 28, 2008 at 14:27
So you are saying I can put a chip in my car to enhance it's performance.
I am very certain this is why the question was asked, not only that but he has a 2000 model engine that certainly doesn't have a chip.
I'm not sure which vacuum hose you are referring to, but we disconnected one of those hoses first as shown to me by a diesel mechanic, this sorted the problem to a point, then I took it to Toyota and they adjusted the TPS valve this fixed the problem.
I have since reconnected the hose and it made no difference.
Steve
FollowupID:
548834
Follow Up By: Member - Matthew ,United Fuel- Monday, Jan 28, 2008 at 19:05
Monday, Jan 28, 2008 at 19:05
No definately not.
I am trying to highlight the fact that people need to be aware that the later model 1HZ diesels are controlled to some degree by electronics.They are not only mechanically controlled.
The TPS you refer to is ONLY for EGR control and in all honesty if you haven't fitted a ball bearing in the vacuum line to the actuator or plated of the pipe at the manifold then you should look into doing that as it will save the engine filling up with carbon and choking .
Matt
FollowupID:
548906
Follow Up By: Steve from Top End Explorer Tours - Monday, Jan 28, 2008 at 19:14
Monday, Jan 28, 2008 at 19:14
That is the hose I disconnected and it made little difference, thats why I reconnected it.
I have a manifold that is off the 2000 model, could I simply change that for the one that has that EGR unit on it ????
As for the rest I understand what your saying.
Cheers Steve.
FollowupID:
548909
Follow Up By: Member - Matthew ,United Fuel- Monday, Jan 28, 2008 at 19:24
Monday, Jan 28, 2008 at 19:24
Steve
Just let me understand what you have exactly.
The crossover pipe from aircleaner to manifold does it have the actuator on it ?
The exhaust manifold does it have the pipe coming from the rear to the actuator pipe.?
Have you put an early model engine/pump in a late model vehicle?
Is it aftermarket turbo?
Matt
FollowupID:
548914
Follow Up By: Steve from Top End Explorer Tours - Monday, Jan 28, 2008 at 19:35
Monday, Jan 28, 2008 at 19:35
The car is a 2003 non turbo 1hz.
While on holidays it was belching smoke out on acceleration, a mechanic at the van park said block that hose off the one from the EGR to the switch, I did this and it stopped it a little, but in the morning if you accelerated say up a
hill it would belch smoke again it seems untill it warmed up.
So I took it to Toyota and they adjusted the TPS valve, it worked for a while so I reconnected the hose again.
It still blows smoke but it seems only when it is close to changing the oil.
I am heading into
Darwin this week and will see a mate who spent 98% of his time at Toyota.
Cheers Steve
FollowupID:
548917
Follow Up By: Member - Matthew ,United Fuel- Monday, Jan 28, 2008 at 20:54
Monday, Jan 28, 2008 at 20:54
Steve
I would be putting a ball bearing in the hose to the actuator on the manifold and putting the hose back on.With the hose disconnected there is a greater vacuum drop and this doesnt allow enough vacuum to pull on the DAC sometimes causing slight low power problems.
Are there any problems with it now.???
Matt
FollowupID:
548949
Follow Up By: Steve from Top End Explorer Tours - Tuesday, Jan 29, 2008 at 23:58
Tuesday, Jan 29, 2008 at 23:58
No it just needs a Service, I will do that tomorrow.
Cheers Steve.
FollowupID:
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