MAF g/second live value

[Andy K]

So I would like to understand if the live value read at idle on a cold day, should be approximately the same as on a hot day at idle.

When the ECU light had triggered (due to ST fuel trims max out at -25%, and LT -20%) and the fault still present it was reading 10g/s at 600rpm.

Normally I would see around 5g/s at idle.

Is the 10g/s defiantly a faulty sensor, or can this value be effected by external temperature/pressure (or even altitude).

When I disconnected the sensor, and have it use default values, the STFT went +25%.
It’s a 4 litre engine, year 2001

11/6/23

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