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Renault Master 2.3dci 125 (FV0C FV0D) M9T engine

My van has been lacking power, has a flat spot when i apply gas and has poor MPG lately. I bought and plugged in a cheap Bluetooth OBD adaptor to check for fault codes but there are no faults. However, the air intake temperature reads zero degrees at all times.
I've replaced the MAF unit (albeit with a pre-owned one from eBay, apparently fully tested) which is supposed to have an integrated air temp sensor, and this hasn't changed the temperature reading.
Is the temp sensor integrated with the MAF the only air temp sensor on these vans?
 

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Thanks. Yes it's 2014 diesel mkIII 135dci. I took out the MAF today and gave it an inspection/ clean up still reading 0 degc inlet temperature. Guess I'll just buy another one to see if that helps.

The thing that gets me is that when I search for the IAT temperature sensor for that model of van, it comes up with a seperate sensor and not the MAF.
 

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Super fantastic Mod Technical Supremo Nice Guy
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Show a picture of this sensor,

Looking at info I have its part of the MAF


PS 135DCI means nothing to us on here its engine size really, but going on this being a 2.3
 
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