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Topvaruk



Member Since: 25 Apr 2018
Location: bratislava
Posts: 48
Slovakia 2010 Defender 90 Puma 2.4 ST Aintree Green
2.4 tdci MAF reading with nanocom - engine off
Help!!

Can someone with a nanocom take a reading for the MAF sesnor with the engine off - I get 288g/s which I think maybe causing black smoke as the ECU will over fuel.

On my 3rd MAF sensor all reading the same
Checked the loom

Next stop maybe LR for software update


Thanks in advance
Post #703034 25th Apr 2018 10:21am
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NickMc



Member Since: 01 Oct 2014
Location: Norn Iron
Posts: 1624
Northern Ireland 2006 Defender 90 Td5 HT Bonatti Grey
Some training for you.


Post #703111 25th Apr 2018 4:53pm
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Topvaruk



Member Since: 25 Apr 2018
Location: bratislava
Posts: 48
Slovakia 2010 Defender 90 Puma 2.4 ST Aintree Green
Thanks NickMc

Very interesting.

The initial issue I am trying to get to the bottom of is the I am getting a flow rate of 288g/s with the engine not running, have tried 3 MAF sensors and it doesn’t differ.

Will be checking the loom this weekend - then it will a trip to LR to check the software. It’s Almost like there is a tuning box installed to trick the ECU into thinking there is more air coming in and hence add more fuel.

I guess it could be a bad remap also.

I have checked 3 defenders at work but they are all 2.2s and the MAF value is 0 when the engine is not running.

Thanks again
Post #703164 25th Apr 2018 7:52pm
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NickMc



Member Since: 01 Oct 2014
Location: Norn Iron
Posts: 1624
Northern Ireland 2006 Defender 90 Td5 HT Bonatti Grey
I would have to get the wiring diagrams out, but that doesn’t sound right, you’ve confirmed on others that it’s not right so I would continue down that route.

Have you done a voltage drop test on the connector pins? Are all the pins in good condition?

I would try and see if your connector can actually support a load with say a 4amp headlight bulb.

Plenty of good videos on YouTube on testing MAF sensors that can explain it better than me eg scannerdanner
Post #703179 25th Apr 2018 8:28pm
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