↓ Advertise on Defender2 ↓

Home > Td5 > Broken MAF i think
Post Reply  Down to end
Page 1 of 2 12>
Print this entire topic · 
johnnyd



Member Since: 13 Apr 2013
Location: Chippenham
Posts: 1006

United Kingdom 2008 Defender 90 Puma 2.4 XS CSW Stornoway Grey
Broken MAF i think
Hi All

My new nanocom has exposed a possible MAF failure, I cleared the error, but it comes straight back, and the airflow on the nancom reads 0.0 with the engine in idle, does anyone know which fuse this is on a TD5 and also what the voltages should be on the MAF plug.......then i guess the next question is where is best for a new one, i read somewhere here that alive do cheaper uprated ones ?

Thanks

JD 2008 TDCi 2.4 XS CSW
Post #245289 21st Jun 2013 8:44am
View user's profile Send private message View poster's gallery Reply with quote
adafish



Member Since: 30 Mar 2009
Location: atherstone
Posts: 1384

United Kingdom 1984 Defender 110 300 Tdi DCPU Stornoway Grey
just get a genuine one, no need for uprated one. Our cars run OE MAF's with stg3 kits on them. Putting Dreams on Drives at JLR Solihull..
Post #245293 21st Jun 2013 8:50am
View user's profile Send private message View poster's gallery Reply with quote
diesel_jim



Member Since: 13 Oct 2008
Location: hiding
Posts: 6093

United Kingdom 2006 Defender 110 Td5 SW Epsom Green
There's thread on here somewhere, where Porny posted the readings that a healthy MAF should show.

It's about 50 kg/hr at idle and up to 550~600kh/hr when on full chat.

With the engine off (but ign on) I think it should show about 4.5kg/hr

If it's showing 0 then it's dead. although remove the plug from it, give it a clean/spray in WD40 and re-insert. I thought I had a dead one, bought a replacement, and since unplugging the old one and re-fitting, it's been fine... so at least I've got a spare now!

Makes a huge difference to performance.


The nanocom can show this reading in real time... as in, when the engine is running. either on stand alone or if the nano is plugged into a laptop.

I prefer having it on a laptop, you can see so much more, and it's clearer, but if you're just after one particular reading, as in the MAF data, then stand alone is fine.

What version of nano have you got? mine is the old Mk.1 but works fine.
Post #245302 21st Jun 2013 9:10am
View user's profile Send private message View poster's gallery Reply with quote
johnnyd



Member Since: 13 Apr 2013
Location: Chippenham
Posts: 1006

United Kingdom 2008 Defender 90 Puma 2.4 XS CSW Stornoway Grey
diesel_jim ......is it fused separately ?

Nanocom is the Newer Evolution from BBS direct with 10% forum discount, i don't think it has PC software anymore?

JD

edit

anyone know where i can get one in Bristol today, Im in Clifton ATM ? 2008 TDCi 2.4 XS CSW
Post #245303 21st Jun 2013 9:12am
View user's profile Send private message View poster's gallery Reply with quote
diesel_jim



Member Since: 13 Oct 2008
Location: hiding
Posts: 6093

United Kingdom 2006 Defender 110 Td5 SW Epsom Green
Yes, it goes through fuse 37, 15amp



Which appears to be a "lone" fuse (i.e, not in the underseat or passenger fusebox) so looking at the wiring diagram, i'd suggest it was the fuse that's in the loom right next to the ECU/relays under the drivers seat.

It also feeds the EGR valve. it is powered from the main ignition relay (and cut-off by the inertia switch on the bulkhead)

Looking at the diagram; if the fuel pump is pumping, then there should be +12v to the +ve side of the fuse holder.
Post #245481 21st Jun 2013 10:08pm
View user's profile Send private message View poster's gallery Reply with quote
ZeDefender



Member Since: 15 Sep 2011
Location: Munich
Posts: 4731

Germany 2011 Defender 110 Puma 2.4 SW Baltic Blue
You can get MAF cleaner now - leaves no residue:
http://www.amazon.co.uk/Mass-Flow-Sensor-C...or+cleaner
I've cleaned several over the years and they usually come "back to life" Thumbs Up Tell someone you love them today because life is short.
But shout it at them in German because life is also terrifying and confusing...
Post #245483 21st Jun 2013 10:36pm
View user's profile Send private message View poster's gallery Reply with quote
diesel_jim



Member Since: 13 Oct 2008
Location: hiding
Posts: 6093

United Kingdom 2006 Defender 110 Td5 SW Epsom Green
I cleaned mine out today with electrical contact cleaner, seems to be very similar stuff.

will check with the nanocom tomorrow as to whether i've killed it! Laughing Rolling Eyes
Post #245484 21st Jun 2013 10:40pm
View user's profile Send private message View poster's gallery Reply with quote
johnnyd



Member Since: 13 Apr 2013
Location: Chippenham
Posts: 1006

United Kingdom 2008 Defender 90 Puma 2.4 XS CSW Stornoway Grey
OK i have volts on the contacts to the MAF so that looks good, i inspected the MAF closer, and all i can see is a piece of thin metal in there, i see no components or wire, should there be anything on the metal plate ?

JD 2008 TDCi 2.4 XS CSW
Post #245498 22nd Jun 2013 7:46am
View user's profile Send private message View poster's gallery Reply with quote
diesel_jim



Member Since: 13 Oct 2008
Location: hiding
Posts: 6093

United Kingdom 2006 Defender 110 Td5 SW Epsom Green
The metal is in a kind of "P" shape with a loop inside it. althugh different makes may look different.



Here's a random google image of one, you can see the sensor poking down:

[img]http://desmond.imageshack.us/Himg62/scaled.php?server=62&filename=photo1pse.jpg&res=landing[/img]
Post #245501 22nd Jun 2013 8:04am
View user's profile Send private message View poster's gallery Reply with quote
johnnyd



Member Since: 13 Apr 2013
Location: Chippenham
Posts: 1006

United Kingdom 2008 Defender 90 Puma 2.4 XS CSW Stornoway Grey
Yeh i think the wire is missing from mine Sad That might be why its not working Wink

Is it worth me doing a remap with it broken do you think ? I will try to find a parts place in Chipnum this morning, but it may be difficult.

JD 2008 TDCi 2.4 XS CSW
Post #245502 22nd Jun 2013 8:10am
View user's profile Send private message View poster's gallery Reply with quote
diesel_jim



Member Since: 13 Oct 2008
Location: hiding
Posts: 6093

United Kingdom 2006 Defender 110 Td5 SW Epsom Green
You really want the engine in tip top condition before you try making it go faster.


Try Harfords. Or TH Whites parts dept are usually open until 13:00hrs.
Post #245509 22nd Jun 2013 8:35am
View user's profile Send private message View poster's gallery Reply with quote
landy andy



Member Since: 15 Feb 2009
Location: Ware, Herts
Posts: 5720

2006 Defender 110 Td5 USW Zermatt Silver
Can't you borrow one from any other td5?

Andy
Post #245511 22nd Jun 2013 8:40am
View user's profile Send private message View poster's gallery Reply with quote
johnnyd



Member Since: 13 Apr 2013
Location: Chippenham
Posts: 1006

United Kingdom 2008 Defender 90 Puma 2.4 XS CSW Stornoway Grey
I did try harfords, closed, didn't know about T H white.....and they have a patten one, not a landy one, for 44 quid, I know everyone says buy original, but they say these are OK any one heard of them?

Lol fixed spelling mistakes.......

I think it might be pattern....... Smile


JD 2008 TDCi 2.4 XS CSW
Post #245513 22nd Jun 2013 8:47am
View user's profile Send private message View poster's gallery Reply with quote
ZeDefender



Member Since: 15 Sep 2011
Location: Munich
Posts: 4731

Germany 2011 Defender 110 Puma 2.4 SW Baltic Blue
My philosophy is always go original for "mystery components" (ones I can't understand) - that way if there's still a problem you can be fairly certain the fault lies elsewhere. Pattern parts always leave an element of doubt...

W.r.t. remapping, wait until the engine's working before you start confusing it more. Pete Bell indicated that remaps are "adaptive" to the engine parameters, which is another good reason to wait. Tell someone you love them today because life is short.
But shout it at them in German because life is also terrifying and confusing...
Post #245531 22nd Jun 2013 9:54am
View user's profile Send private message View poster's gallery Reply with quote
johnnyd



Member Since: 13 Apr 2013
Location: Chippenham
Posts: 1006

United Kingdom 2008 Defender 90 Puma 2.4 XS CSW Stornoway Grey
I went for the Pattern, its guaranteed for 1 year at T H White Wink

And.......MAF now works and shows airflow on the Nanocom, and it drives better too Smile

Many Thanks all

JD 2008 TDCi 2.4 XS CSW
Post #245538 22nd Jun 2013 10:53am
View user's profile Send private message View poster's gallery Reply with quote
Post Reply  Back to top
Page 1 of 2 12>
All times are GMT

Jump to  
Previous Topic | Next Topic >
Posting Rules
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum



Site Copyright © 2006-2024 Futuranet Ltd & Martin Lewis
DEFENDER2.NET RSS Feed - All Forums