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  #1  
Old 6th-February-2009, 13:19
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Join Date: Oct 2008
Posts: 77
Default TD4 MAF Sensor

Hi All.

I've a friend with a very sluggish TD4 and I suggested pulling the MAF. I've just been outside and popped my bonet in the hope of sending a photo and low and behold, i've not got a clue.

On my Passat and my girlfriends car its very obviously on the pipe after the airbox... also is on her brothers Corsa.

Any clues or pictures as to where they've hidden it?
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LZ
  #2  
Old 6th-February-2009, 14:49
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Join Date: Nov 2008
Posts: 47
Default Re: TD4 MAF Sensor

Hi Rob.
The maf sensor is next to the air filter, just behind the oil filer cap, you will need to remove the plastic engine covers to get to it, just found this picture on the site, (forget about the arrows, yellow and red).
The maf is at the very bottom left hand corner of the picture at the side of the oil filler cap.

pete.
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td4-maf-sensor-maf.jpg  
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  #3  
Old 6th-February-2009, 16:44
chromiumuk's Avatar
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Default Re: TD4 MAF Sensor

Roverrons website is still one of the best sources of info.

lseries2
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  #4  
Old 18th-March-2009, 12:51
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Default Re: TD4 MAF Sensor

with fear of sounding stupid....

How the hell does the rear cover come off the engine. I can see the oil fillter cap will need to come off first - but even then with the 3 screws out it won't budge.

Looks like a pipe on the right hand side slots into it!?
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  #5  
Old 18th-March-2009, 16:34
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Default Re: TD4 MAF Sensor

That's 'coz theres 3 more screws over the back.
Best yersel a Haynes.
Allan
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  #6  
Old 18th-March-2009, 16:41
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Default Re: TD4 MAF Sensor

Sounds like your removing the top of the air filter housing. There are two more blots at each corner at the back, there difficult to see but get your hand down there and you should feel them.
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Old 19th-March-2009, 12:13
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Default Re: TD4 MAF Sensor

With regards to the "sluggish" TD4, is it worth checking your turbo pipes for holes? And the fuel pumps too.

Cheers

Blippie
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Old 19th-March-2009, 12:14
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Default Re: TD4 MAF Sensor

I don't think its a boost problem. Once it 'goes' it 'goooesss'. Its the bottom end thats given up a bit (when its off boost).
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Old 19th-March-2009, 18:16
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Default Re: TD4 MAF Sensor

Once you've got the air filter housing off, yes you can try running the vehicle without MAF connected. If there is a significant improvement in performance yes the MAF may be faulty but my solution is to carefully spray the MAF airflow sensing film plate with a good quality electronics contact cleaner (Maplins) the plate becomes coated with goo and no longer senses low volume airflow, hence the initial hesitation. That's the easy bit now you've got to get the air filter housing correctly positioned. Good luck.
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Old 19th-March-2009, 19:34
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Default Re: TD4 MAF Sensor

Does it work the electronic cleaner i take it you tried it did it give good results.i think mines on its way out and could do with a cheap fix even if only short term
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LZ
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