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Fuel Trims

  • Amine07
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3 years 3 months ago #56981 by Amine07
Fuel Trims was created by Amine07
Hi Guys

I have a Toyota Hilux 2013 model, V6 4.0L (1GR-FE) engine with a free flow exhaust which means the catalytic converters are removed and the mini cat (LAMBDA Fooler) installed, all were working fine until couple of months ago i started smelling bad exhaust fumes almost like unburned fuel but no smoke at all.
I used (Nonda health monitor scan tool) it is very basic dongle but it has fuel trims i was able to check the vehicle and i saw that :
no matter the situation closed or open loop the % stays the same
STFT B1 = -95
LTFT B1 = 20
STFT B2 = 20
LTFT B2 = 20

I Also checked 5 other petrol (gasoline) cars with the same tool 4 of them also show -95 on the STFT B1 im not sure why..


You assistance will be very helpful

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