MAF sensor diagnose

[fordsmax471]

Hello !

i noticed it
S-Max 2.0 TDCi 110kw
Ignition key the ON position, engine not running and MAF sensor shows 2,11 g/s

this is normal ?

[Donny]

That is not normal. It should read 0 when the engine is not running.

I don't know the exact figures for your engine, but at tick over I would expect it to be somewhere around 6 or 7 and be steady, and rise to high double figures under extreme load.


Hopefully someone with the same engine as you can confirm the normal expected values.

[f-wolf]

These are the readings from a MAZDA 3 2L Petrol 2010

Ignition on Engine NOT running

Engine not running.jpg (54.45 KiB) Viewed 1512 times

And

Engine running ... Idling at about 750RPM

Engine Idling.jpg (54.5 KiB) Viewed 1512 times

Try to clean your MAF Sensor with Sensor Cleaner first ...

[fordsmax471]

Thanks !

when the engine running 800rpm and maf 12g/s
i can't find the Forscan MAF sensor volt PID-s only MAF g/s and MAF hz
car mileage is 25000km

[fordsmax471]

I installed a new maf sensor today, the result is same 2.11 g/s

[Pg502]

Quick question
Can forscan via pc read the voltage from a MAF sensor ?

[f-wolf]

Yes !!

Engine Idling.jpg (55.39 KiB) Viewed 1032 times

[Pg502]

So I have stalling and hesitation at idle for my 2011 mustang.
On forscan it shows g/s is around 5 and but the volts are at a constant “0”. What does that mean ? (Idle )

[Pg502]

4g/s***

[WALK3R]

So I have stalling and hesitation at idle for my 2011 mustang.
On forscan it shows g/s is around 5 and but the volts are at a constant “0”. What does that mean ? (Idle )

Sounds like your maf is broken, try back probing it for voltage.