Disco 2 Maybe MAF but how to make sure?

02Disco2 · May 7, 2018

Hi, hopefully everyone is having a good BH weekend?

So today's new addition to the list of faults and fixes on my 2002 D2 is the flat spot/lack of power that I occasionally get, usually when accelerating (or trying to) from low revs - driving along woodland track uphill (6%) and then accelerating gives no power, but seems to kick down fine pulling away from junctions or when driving. (its not TC kicking in!)

I'm leaning towards the MAF after reading other people's posts and doing some research but is a Nanocom/Hawkeye the only way to identify this properly (or taking it into a garage)?

If it turns out to be MAF the general consensus seems to be sticking to the original LR part at around £160 - are the Siemens (etc) products really that crap?

Sorry if this has been answered already, I did have a look about but as the search function is down at the moment I'm struggling on that front too!

Paul D · May 7, 2018

Dunno the 'proper' answer, but I'd remove the MAF and drive it, see if the symptoms persist. If the flat spot is better/cured, you then know it's most likely the MAF or associated pipework. It might just need a proper clean, but most people renew them ..

berg450 · May 7, 2018

My problem is very similar but all nanocom readings seems to be fine (but let see how others think, i have just shared my data)

adrianhartopp · May 8, 2018

FWIW, I had similar issues with my X reg Td5 manual. I'd been working out how to remove the MAF sensor with a view to cleaning it and forgot to plug the connector back in and hadn't noticed any difference in performance until a colleague pointed it out to me when I was changing the air filter. Cleaned the MAP sensor and replaced the MAF sensor with a Delphi one and all seems to be running well (for the moment at least). Fuel consumption seems to be a bit better and I've got power back and no flat spots.

Might be worth running with it unplugged to see if it stays the same.

02Disco2 · May 8, 2018

adrianhartopp said:
FWIW, I had similar issues with my X reg Td5 manual. I'd been working out how to remove the MAF sensor with a view to cleaning it and forgot to plug the connector back in and hadn't noticed any difference in performance until a colleague pointed it out to me when I was changing the air filter. Cleaned the MAP sensor and replaced the MAF sensor with a Delphi one and all seems to be running well (for the moment at least). Fuel consumption seems to be a bit better and I've got power back and no flat spots.

Might be worth running with it unplugged to see if it stays the same.

Thanks, when it's back from the garage on Friday I'll give that a go over the weekend

Bobdog · May 9, 2018

02Disco2 said:
Hi, hopefully everyone is having a good BH weekend?

So today's new addition to the list of faults and fixes on my 2002 D2 is the flat spot/lack of power that I occasionally get, usually when accelerating (or trying to) from low revs - driving along woodland track uphill (6%) and then accelerating gives no power, but seems to kick down fine pulling away from junctions or when driving. (its not TC kicking in!)

I'm leaning towards the MAF after reading other people's posts and doing some research but is a Nanocom/Hawkeye the only way to identify this properly (or taking it into a garage)?

If it turns out to be MAF the general consensus seems to be sticking to the original LR part at around £160 - are the Siemens (etc) products really that crap?

Sorry if this has been answered already, I did have a look about but as the search function is down at the moment I'm struggling on that front too!

island 4x4 sell the siemens one for £59 + vat

02Disco2 · May 9, 2018

Bobdog said:
island 4x4 sell the siemens one for £59 + vat

Yes I spotted that today after a bit of searching. Once the car is back from the garage and I’ve checked the fuse and voltage to make sure It is actually dead I think I’ll go for one of those

02Disco2 · May 13, 2018

Unplugged the MAF and its like driving a different car!
VDO MAF ordered from island 4x4 so will clean the MAP when I fit it..
Considering blanking off the EGR but not sure if that's wise with the new mot rules Local garage said to go for it but still hesitant, any thoughts?

adrianhartopp · May 14, 2018

I'm confused on the EGR ruling with regards to the new MOT standards that are coming into force. From what I can tell, it's all focussing on the DPF and whether that's been tampered with etc and I can't find any mention of EGR at all.

Might be worth making your own blanking plate from a coke can and fitting that to the connection near the bulkhead. That way everything is still in place for a visual inspection but the blanking plate shouldn't be visible. FWIW though I've completely removed mine and it's sailed through the last 2 MOT's without as much as a mention.

Paul D · May 14, 2018

adrianhartopp said:
I'm confused on the EGR ruling with regards to the new MOT standards that are coming into force. From what I can tell, it's all focussing on the DPF and whether that's been tampered with etc and I can't find any mention of EGR at all.

Might be worth making your own blanking plate from a coke can and fitting that to the connection near the bulkhead. That way everything is still in place for a visual inspection but the blanking plate shouldn't be visible. FWIW though I've completely removed mine and it's sailed through the last 2 MOT's without as much as a mention.

On the D1 a 2p piece fitted perfectly, and is a tad more robust than a coke can .. and 'cos it's inside, it's totally invisible ..

02Disco2 · May 14, 2018

adrianhartopp said:
I'm confused on the EGR ruling with regards to the new MOT standards that are coming into force. From what I can tell, it's all focussing on the DPF and whether that's been tampered with etc and I can't find any mention of EGR at all.

Might be worth making your own blanking plate from a coke can and fitting that to the connection near the bulkhead. That way everything is still in place for a visual inspection but the blanking plate shouldn't be visible. FWIW though I've completely removed mine and it's sailed through the last 2 MOT's without as much as a mention.

I've ordered the blanking kit but going to keep the egr just in case. I'm hoping that as the egr is inside the engine cover it should be OK (as invisible) but mine has a cooler box between the egr and intake and the pipe from this to the intake is visible so may just blank off the side under the cover to be safe.

Mot isn't till next April so have some time yet!

Disco 2 Maybe MAF but how to make sure?

02Disco2

Well-Known Member

Paul D

Old, nackered 'n broke, but the Landy is fine . :)

berg450

Well-Known Member

adrianhartopp

Active Member

02Disco2

Well-Known Member

Bobdog

Well-Known Member

02Disco2

Well-Known Member

02Disco2

Well-Known Member

adrianhartopp

Active Member

Paul D

Old, nackered 'n broke, but the Landy is fine . :)

02Disco2

Well-Known Member

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