Good evening team - hoping everyone is well!!!
Apologies for the delay, it’s been hectic here in Brisbane the past few weeks.
As expected, the wrestling with Toyota has taken many weeks and to be honest has been rather pointless.
After taking the workshop manager for a 1 hour drive to thoroughly go through the history and surging issues on the road - I thought we might make some progress.
Unfortunately it rained a fair bit, caused some major flooding and the workshop shut for a week or so. I finally got a call nearly two and a half weeks later to say that they’d managed to get a code (small surprise since it hasn’t thrown a code for the last 12 months). Somehow technician ouldn’t ‘recall’ the code, but was related to fuel primer and filter $390.
Not surprisingly it made no difference at all - very much a case of some unnecessary work, sell some parts and get it out the door.
They also wouldn’t share their Techstream data with me. I had hoped this might be a reasonable request???
So nothing to show from Toyo. And they took a piece of my wallet!!!!
@karl2000 - you nailed it!!!
So…..where to now.
I found a pretty good little technical paper from Denso on the fuel injection system:
https://www.service-engine.com.ua/webroot/pdf/TOYOTA LAND CRUISER (2).PDF
On page two it shows a really handy little schematic of some key inputs that the ECU relies on to make informed decisions about fuel delivery. Couple of screenshots included as well.
After reading this, I am realizing that my troubles are so consistent, easily repeatable and somewhat dependent on specific revs AND a particular load state being achieved i.e uphill - it’s possible that the ECU (or one of these specific inputs) has a role here.
So now off to check each one of these ECU inputs - inspection, clean and where possible some further review on my poor version of techstream.