79 series randomly dies under power

[Tassie Jim]

Hi team,
I have been to my local Toyota dealer and they have not been able to help with my intermittent problem. I am hoping someone may have heard of a similar issue.

My 79 series that has done 80000 km occasionally just dies under acceleration like the motor has stopped. This has been going on for 2 years slowly getting worse.
No dash lights come on and taking my foot off the pedal and JUST reapplying we will takeoff again.Some times it comes good in 10 seconds and the longest has been 3 minutes.

I have used a scan tool and no codes are being thrown
I have 2 fuel filters and these are changed alternately every 10000 km.
I use a fuel additive 
This issue my happen once per tank or once every 3 tanks.
I can’t reproduce the issue.
The throttle has always been half to three quarters applied when this has happened
So far the tank has always been less than half full when the issue has happened.

I love my cruiser and am heading back to the big island next year so need to fix the issue but have no idea where to start.


Jim 
Launceston 
Tasmania 

Sent from my iPad

[Buzz66]

Most likely culprit would be an intermittant Suction Control Valve on the HP Pump.

I also wouldnt rule out some FOD in the Tank...Like a piece of plastic floating around in the tank and blocking the pick up

Edited June 5, 2024 by Buzz66