GR Yaris Strange Boost/Loss of power issue

[GRSam]

So whilst overtaking someone, the car started to judder and lose power.

No lights on dash, no error messages.

Car drives completely normal under 1 Bar of boost, as soon as you use hard acceleration and the display shows +1 Bar of boost, loss of engine power and a hard loss of power judder sensation which can also be heard out of the exhaust.

Did some data logging on a SnapOn ODB port reader, showed some strange injector readings but left it at that and have booked it in to Toyota on monday to investigate….

*The car has previously had issues with a high pressure fuel flow sensor which was fixed by Toyota.

Anybody experienced this? Anyone have any theories on what may cause this issue?

 

[KimmE_GR]

I have something like this since a few days too. I have installed the Eventuri Intake and the airfilter should be cleaned every 5000 km. I was at around 6300 km when it happend to me first time. So my idea was that this is causing the problem. Will soon swap to a new filter and hope that this problem will be gone after the swap.
Just happens under full throttle.

 

[Ecsrobin]

So whilst overtaking someone, the car started to judder and lose power.

No lights on dash, no error messages.

Car drives completely normal under 1 Bar of boost, as soon as you use hard acceleration and the display shows +1 Bar of boost, loss of engine power and a hard loss of power judder sensation which can also be heard out of the exhaust.

Did some data logging on a SnapOn ODB port reader, showed some strange injector readings but left it at that and have booked it in to Toyota on monday to investigate….

*The car has previously had issues with a high pressure fuel flow sensor which was fixed by Toyota.

Anybody experienced this? Anyone have any theories on what may cause this issue?

Standard car?

 

[GRSam]

Standard car?

Bone stock.

Only owned the car about 6 months. 12900 Miles currently.

Second time its died in 6 months of ownership. One track day and a few hard B road drives.

 

[Rubi]

So whilst overtaking someone, the car started to judder and lose power.

No lights on dash, no error messages.

Car drives completely normal under 1 Bar of boost, as soon as you use hard acceleration and the display shows +1 Bar of boost, loss of engine power and a hard loss of power judder sensation which can also be heard out of the exhaust.

Did some data logging on a SnapOn ODB port reader, showed some strange injector readings but left it at that and have booked it in to Toyota on monday to investigate….

*The car has previously had issues with a high pressure fuel flow sensor which was fixed by Toyota.

Anybody experienced this? Anyone have any theories on what may cause this issue?

Hi Sam, I have the exact same issue. Any chance you figured out what caused it? And if you did, mind sharing it?

 

[MRA3]

Guys, check all the rubber hoses that go to the airbox, specially those that control the flap of the airbox opening (located to the right of the first intake duct when looking from the front) when at full throttle.

I had an issue similar to what’s described and the issue was that the shorter rubber hose was disconnected, hence the ecu capped of the turbo at 0,9 bar or so.