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Maf Sensor Questions


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#1 scottrobertson1990

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Posted 24 June 2019 - 06:58 AM

So i've had a problem with my Turbo struggling to idle if the MAF sensor is plugged in, with it unplugged it runs but its lumpy and runs in some sort os safe mode with no boost. 

 

Plugged in a OBD kindly borrow from Martin S, and it pointed at faults MAF sensor P0100 and miss fire p0300

 

Now the coil pack has been changed and the plugs are new, so im not sure what else to point at with the second code. 

 

 

With the MAF sensor, the one I had had a different part number to the 71mm MAF that Courtenay sell so I wasn't sure if it was the wrong one? Also i've read about the wrong type of air filter blowing out MAF sensors, is this a possibility? 

 

The weather is beautiful and I want to be out in the bloody thing!!! 

 

Thank you!

 



#2 scottrobertson1990

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Posted 24 June 2019 - 06:59 AM

The MAF i currently have is a Bosch 0280218211



#3 ayresyy

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Posted 25 June 2019 - 07:01 AM

   That is the part number for the 80mm Z20LEH MAF, not an original item but an upgrade. Was the car running fine previously with this MAF fitted?



#4 Ormes

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Posted 29 June 2019 - 09:58 AM

80mm maf needs ecu calibration so that sounds like your problem assuming it's mapped for a 70mm.

#5 scottrobertson1990

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Posted 30 June 2019 - 06:11 PM

80mm maf needs ecu calibration so that sounds like your problem assuming it's mapped for a 70mm.

The MAF with that part number is 71 mm internal diameter, i've just measured it. and its been mapped to the car so ive been told. 

 

Ive read about the airbox/filter effecting the MAF, what air filter do people recommend and could the current one (K&N cone) have mullered the MAF sensor?

 

Thanks



#6 ayresyy

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Posted 30 June 2019 - 09:16 PM


If the filter has been over oiled then it’s possible it hasn’t helped. Even without an oiled filter they can just fail though .

#7 scottrobertson1990

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Posted 01 July 2019 - 04:47 PM

If the filter has been over oiled then it’s possible it hasn’t helped. Even without an oiled filter they can just fail though .

Great thanks fore your help, ill get a new MAF and see how it pans out!



#8 Ormes

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Posted 01 July 2019 - 08:23 PM

People (incl. me) like the Apexi, as it is a dry filter and therefore doesn't knacker the MAF.  Makes a nice noise but probably not as free flowing as others.



#9 siztenboots

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Posted 02 July 2019 - 09:09 AM

if maf is contaminated with oil, thrn wash with petrol / white spirit

#10 scw02102

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Posted 02 July 2019 - 08:42 PM

I have a Bosch 70mm one for sale if you want it cheap?

Message me, only done a few thousands mile too, I upgraded to the 80mm version






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