1NRFE Engine Loss of Power

[mik36]

Hi All

I know this is a yaris forum but its the same engine 1NRFE.

I bought this 3 months ago and it sometime seems to loss power specially at roundabouts in UK.

1- No codes
2- cleaned MAF
3- air filter replaced
4- cleaned throttle body

I really need some advise what to check

I am getting 39mpg mainly in city is this too low ?


Thank you for any help

cheers

[ex-x-fire]

Low fuel pressure?

[mik36]

Thanks for the prompt response.

I dont think there is a fuel pressure sensor I may be wrong

How can I check this is there any simple steps to check using ODB or techstream ?

[mik36]

No check engine light

[mik36]

Just to let you know it does starts without any problems runs but acceleration is poor like there seem to be delay in press in gas pedal and acceleration it self.

Mileage is 49K

[mik36]

Some Data extracted from Torque pro run for 5 min approx

https://ibb.co/Xk9T1L9

[mik36]

https://ibb.co/Xk9T1L9

[WeeYari]

Just to let you know it does starts without any problems runs but acceleration is poor like there seem to be delay in press in gas pedal and acceleration it self.

Mileage is 49K
You're a little vague in what you are calling a delay in acceleration. If the Verso is like the Yaris, throttle response is electronically controlled vs cable controlled. The throttle response in electronic systems experiences a delay vs immediate in cable controlled systems. Very common complaint here on YW when it comes to throttle response in this vehicle.

[mik36]

Thanks for the response, what i meant was it has slow acceleration, I thought it was due to dirty throttle body. I note specially on round abouts I have uploaded the ODB data in the link.Verso S is similar to yaris same engine 1NRFE.