Fitting a new maf sensor & PCV filter

[Arctic]

I have been having issues with my 2.0 diesel tourer for about 10 months now, if i really think back not extra special MPG always feeling sluggish but the power was there if i booted it just that nice smoothness missing in the low revs and speeds, oh and the heart pulsating feeling of pulling out from junctions and roundabouts it is only over the last 5-7 weeks that the car as been surging, ie losing power as though it was going to stop cut out only to kick forward if i pressed the gas pedal a bit more cruising at say 30/50/70 you would still get the stopping dead feeling then surge forward.

Asked on the forums and read up a bit about this and was given the answer its the MAF so at our recent Nano meet on the 11th March i was given the chance to get her on a T4 session with Duncan :hail: to check out any faults and sure enough the MAF was reading wrong unplugged it at the Nano took her for a drive seemed to pick up and feel better, so new MAF needed purchased one from Eurocarparts (not cheap but a must have )below is how i fitted the MAF and the PCV filter at the same time enjoy Arctic.

Fig one remove the engine cover three bolts 8mm
1

2

3

Fig Four once bolts out remove the engine cover and put in a safe place for re-fitting at end of the job
4

Fig four & five remove the two screws holding the air intake pipe
4

5

Fig six & seven pull air intake pipe from the air filter cover this is easy as the concertina ridges will allow this
6

7

Fig eight/nine/ten/eleven shows the Allen bolts which secures the air filter cover, which needs to be removed to change the MAF and also the PCV filter there are five.

Rear right corner looking at it from front of engine
8

Rear left and back by the MAF 5ml Allen
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10

Three at the front of the cover
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These bolts are captive so you cannot lose them.


Fig Twelve remove oil filler cap
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Fig Thirteen you can now remove the air filter cover and put it safe with the engine cover removed earlier.
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Fig Fourteen you now have access to the air filter PCV filter housing and the MAF sensor, refit the oil filler cap to stop anything falling into the engine.
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Fig Fifteen the MAF sensor plug and casing
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Fig Sixteen/seventeen unplug the MAF sensor wire press in both sides and pull up.
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Fig Eighteen/nineteen release the two retaining clips, and disconnect from the turbocharger duct which hold it to the maf housing
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Fig Twenty remove the air filter from its housing, as this is attached to the MAF
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Fig twenty one pull the turbocharger duct from the MAF housing, you may not have to remove the duct from turbo charger below, i did just to show how it fits, all push fix, thread it out carefully if you do remove it.
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fig Twenty two/three/four/five slacken and remove the two Torx screws top right and bottom left
top right Torx
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use long nose pliers to grip the torx screws as it nears the end coming out so not to lose it in engine below.
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Bottom left torx
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Fig twenty five with torx screws removed you can now also remove the MAF with its housing.
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Fig twenty six mine looks like it's had the sensor removed before. either to clean it or be changed but not the housing, and not in my ownership.
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Fig twenty seven/eight old and new side by side
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Fig Twenty nine new maf sensor fitted
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Fig Thirty refit the turbocharger duct and hose easiest way to do this is remove the little hose from the duct.
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Fig Thirty one hose removed from the duct so it can be lowered down and on to the turbo charger it is a push fixing, remember you don't have to remove the duct to fir a new MAF, it can just be pulled back enough to fit it.
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Fig Thirty two shows the two fixing points for the duct hose
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Fig Thirty three/four hose re-fitted also push fix
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Fig Thirty five plug the wiring back onto the MAF sensor.
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The MAF sensor is now fitted and refitting of the air filter and engine cover etc is the reverse of removal unless like me you are going to change the PCV filter at the same time this is shown in the next post section. Arctic.

PCV fitting with out removing the fuel return hoses follow on link from above
https://www.the75andztclub.co.uk/for...71&postcount=7

Photos reinstated, 21/11/23

[Dragrad]

When you are done, let me know and I'll do the usual

BTW - what is the "card" on your thumb for?

[Arctic]

Originally Posted by Dragrad

When you are done, let me know and I'll do the usual

BTW - what is the "card" on your thumb for?

That is a plaster after cutting though my thumb and nail earlier in the day modifying some compensators i wrote on it card to remind me when i went over the shop to get a sympathy card for the lady next door she just lost her husband he was nice old gent 85 been in hospital 3 months

[Dragrad]

Sorry to read that, it's a bad day when we lose friends

[Arctic]

Originally Posted by Dragrad

Sorry to read that, it's a bad day when we lose friends

Even worse when i nearly cut my thumb off life still goes on we are all heading into the light or dark which ever way you look at it so try and make the most of life if you can get along and help each other if not keep your self to your self is my motto PCV post to come Arctic.

[Dragrad]

Ah! But what is a thumb compared to a life? However I know what you mean,..... and your sterling work is much appreciated

[Arctic]

Carrying on from the fitting of the maf sensor i decided to change the PCV filter at the same time even though i only changed it 8-10months ago at only £8.99 its worth it in my eyes anyway so here goes.

To replace the PCV with out removing the fuel line and clips first unscrew the three retaining screws then disconnect the injector wiring plugs and move the harness to one side follow the pics below.

Fig one remove the three screws 5mm socket worked for me on the star screws.
1

Fig two screws removed from there fixings
2

Fig three unplug the injector wiring harness four just squeeze on the tang, you could use a small screw driver to open the tang and pull off.
3

Fig four set harness to one side out of the way
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Fig five/six unscrew the four Allen screws so you can remove the PCV filter valve housing
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6

Fig seven remove the filter housing by lifting and twisting toward you or the front of the car carefully no rush it should come away nicely without having to unclip any fuel return hoses thus not braking those little T junctions
7

Fig eight clean and check the rubber gaskets seals or change for new ones.
8

Fig my old and new filter, this is only 8-10months old still soft a wet not hard so in theory did not need changng but hey why not.
9

Fig then clean inside the valve fit new rubber O- ring
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Fig eleven fit new filter push home over the O ring and pushdown the plastic holder
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Fig twelve refit the PCV valve by tilting reverse of removal carefully again no rush making sure not to disturb the fuel return hoses.
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Fig thirteen refit the four Allen screws corners first then the rear and front
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Fig fourteen replace or fit new air filter again i fitted new one even though it did not need it, why not i am fussy.
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Fig fifteen refit the air filter cover starting at the right rear corner this can be fiddly once started do not screw home as the others have to be lined up.
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Fig sixteen fit the others there are five remember two at the back corners and three at the front top.
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Fig seventeen refit air intake pipe push fit
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Fig eighteen refit two screws holding the air intake pipe housing
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Fig nineteen/twenty refit the engine cover three bolts tidy up your tools wash hands take the car for a nice drive check out the smoothness and new power
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20
Jobs a good one happy motoring again

http://www.ebay.co.uk/itm/LAND-ROVER...72.m2749.l2649

Photos re-instated 22/11/23 time 02-06

[jonno12]

very good post and how to, arctic, but i don't know how you managed it without the long nosed pliers you left in my car

[Arctic]

Originally Posted by jonno12

very good post and how to, arctic, but i don't know how you managed it without the long nosed pliers you left in my car

Hi Jonno.
Was those the really long ones if so i have a feeling they are the ones i borrowed off trebor thats the only trouble with going from one car to another we need to set up some sort of an assembly line at the next nano cheers for letting me know i am sure they will make there way back home in the near future Arctic.

[HarryM1BYT]

Originally Posted by Arctic

That is a plaster after cutting though my thumb and nail earlier in the day modifying some compensators i wrote on it card to remind me when i went over the shop to get a sympathy card for the lady next door she just lost her husband he was nice old gent 85 been in hospital 3 months

That seems a bit extreme to me, cutting your thumb, just so you could write 'CARD' on the plaster as a reminder. Everyone else seems to manage quite well by putting an elastic band around finger as a reminder