100 series LC acceleration problem Help Needed

Every post I make, I remember something that i should have said after the event.

It is a turbo diesel, and the problem did occur once before the service. The timing belt was replaced in the recent service.

Thaank you all for your replies.

I always carry a spare fuel filter. I could change it myself if I had to. I may give that a try.

If you look at the filter housing you should be able to tell if someone has been near it or if it was "untouched".

Just read that it did happen before the service, so could be a blocked filter. Double check that it has been changed.

Thank you Bruce.

I may wait until I get to Cairns, as I have friends there who can provide other support. The vehicle is drivable but not as good as it should be.

I was hoping to find someone who had an identical problem and had solved it. I can see me wasting a lot of time and money if I do not have a clear idea of what needs fixing.

I had this problem once with a bio fuel mixture, No oomf. Only use real diesel now.

If it is fuel starvation and you intend to wait until Cairns I would think the repair bill will be expensive, lots of K's while starving for fuel should KO the pump nicely.

The problem is undetectable when not towing and when towing on the flat. It is only under heavy acceleration when towing that it occurs. I suspect when the fuel flow rate is very high.

I have read of people having trouble with the accelerator position switch; not exactly the same problem though.

Rob,
I had a problem with my 100 series petrol cruiser while on hols recently.
As I could not get to the bottom of the problem easily without a scan tool, not that I would have recognised the fault codes anyway. So I booked it into Toyota to have them check the OBDs with their scan tool.

Result was that it was an intermittant fault and should be checked next time it reared its ugly head. But at least they confirmed my suspicions. I was able to finish the hols with an easy mind. Cost, about 50 bucks or less for the checking of the OBD, cheap for peace of mind to know the thing was not going to destroy itself in the near future.

I suggest you talk to Toyota and get them to check the Onboerd Diagnostics to see if it is expensive to fix.

May only be a few bucks worth to resolve. Probably cheaper than a major repair in an out of the way place.

Know you did not want to hear that but the strongest rule in the book is Murphy's Law.

Cheers, Bruce.

Edit - vehicle was a Nissan Patrol but could be same issue.

I meant to say that could it be a bit of bad fuel.

My tanks were almost empty when I filled up with the cheap rubbish.

Opps
Rob
In your situation... I would be getting the 4B loooked at immediately, so I did not ruin my holidays.

Sounds like a dirty fuel/injector problem..
A blocked filter (the size of a pea) almost ruined our trip to the Tip, last year

Also
I need to correct a few things.
99% of the time I tow in 4th gear, and on the rear occasion I did tow in 5th, it cost me $2600, for a new 5th gear.
This is what I do, these days.......( usually )
With the new 5th gear...

I generally start out towing in 5th
After a couple of hrs, I am sick of the constant changing, so I just drive in 4th
Highway speed, is roughly 90--95 KM/Hr rearly above it.

If I am feeling energetic.
On the flat, with tail or no wind
As soon as I hit a rise, I am down a gear,
back to 4th, and spinning the motor, rev range 2500-2800.
Over the rise back up to 5th.

With a head wind 4th gear all day.

Suprised with my economy, not really.....Towing is always heavy on fuel, but I was so down on power, at highway speed, I finally put a bigger turbo on the motor. ..

The resullt.... Still heavy on fuel .. But heaps more power towing.
Hope this makes more sence than the earlier post.

Life is always about compromise.

Cheers
Bucky

Thank you all very much for your help. It is greatly appreciated.

I have not been ignoring the advice given, I have been weighing it up with the information from LCOOL and other websites.

Today I moved on to Lightning Ridge, but used the main tank rather than the larger long ranger tank. The problem seems to have disappeared. I quickly switched to the tank I was using yesterday and the problem re appeared.

Hopefully I know where the problem is now.

Once again thank you all.

Hi Rob

Now youve narrowed onto the LR tank check
Tank venting , take cap off and run
Kinked/ damaged hoses from LR tank (and overtightened zip ties)
Pickup screen clogged in tank
Changeover solenoid

Take line off B4 and after solenoid and pressurise tank a little see if you have a cood flow, compare to main tank

Cheers

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