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tasr12

Member Since: 09 Jun 2013
Location: Dorset
Posts: 228

2002 Defender 110 Td5 CSW Zambezi Silver

TD5 MAF Sensor Query

Just replaced the the injector wiring loom and rocker cover gasket. On hooking up to an Autocom it showed the MAF sensor sitting at 4.40 and not moving regardless of revs. Having gone over the vehicle in the week that I have had it I noticed the MAF was unplugged. I'm now presuming this is laziness on on the part of the previous owner not addressing the issue?
From searching a reading 4.40 implies the MAF is knackered - correct?

The 110 is driving ok and gets up to 70 with no real issues or smoke, how urgently do I need to change it? There was some oil in the red plug at the ECU, it's been recommended I open up the ECU and see if there is any oil in there, (by an Independent garage) which could be causing the MAF not to work as it should....any thoughts?

Finally if it does need replacing I see a genuine MAF is the only way to go - does anyone have one they want to be rid of or am I going to have to Google to find the price?! These 2 outlays in the first week aren't ones I wanted to be making!

Cheers,

Tom. 2002 110 CSW TD5, Zambezi Silver
1995 110 CSW 300TDi - SOLD

28th Aug 2015 3:46pm

bell-auto-services

Member Since: 08 Jul 2007
Location: North Yorkshire
Posts: 2232

2013 Defender 110 Puma 2.2 USW Orkney Grey

4.4 is dead, it should sit arround 60kg/hr at idle. MHK100620G is the part number.

28th Aug 2015 4:35pm

tasr12

Member Since: 09 Jun 2013
Location: Dorset
Posts: 228

What I was worried about - what is running it as is going to do for the next couple of days given it's the bank holiday!? 2002 110 CSW TD5, Zambezi Silver
1995 110 CSW 300TDi - SOLD

28th Aug 2015 4:42pm

excossack

Member Since: 22 Feb 2012
Location: North West
Posts: 5745

1999 Defender 110 Td5 SW Caledonian Blue

If you leave it unplugged then the ECU will assume default settings. Mine is currently unplugged and has been for the last week or so with no issues. It is getting plugged in again over the weekend as I don't think the issue is the MAF.(In my case at least) 1999 Defender TD5 110

Regards
John M0VAZ
Econet Station 48 no clock

28th Aug 2015 5:34pm

tasr12

Member Since: 09 Jun 2013
Location: Dorset
Posts: 228

I'm guessing that's what he did! What will a new MAF give me if it seems to be driving well at the moment?

300Tdis were so much simpler! 2002 110 CSW TD5, Zambezi Silver
1995 110 CSW 300TDi - SOLD

28th Aug 2015 6:12pm

mk1collector

Member Since: 17 Sep 2009
Location: West Yorkshire
Posts: 6769

I bought mine from bell auto services ^^^^ great service and fast delivery at a good price

Ray
My build thread
http://www.defender2.net/forum/topic17615.html

28th Aug 2015 6:23pm

tasr12

Member Since: 09 Jun 2013
Location: Dorset
Posts: 228

Thanks for that - Bell being OEM would keep me happy normally but having seen a few threads saying original LR only can Bell enlighten me?

Thanks again,

T. 2002 110 CSW TD5, Zambezi Silver
1995 110 CSW 300TDi - SOLD

28th Aug 2015 6:55pm

mk1collector

Member Since: 17 Sep 2009
Location: West Yorkshire
Posts: 6769

Oem is lr just in the manufacturers box which I seem to remember is Siemens Ray
My build thread
http://www.defender2.net/forum/topic17615.html

28th Aug 2015 8:43pm

tasr12

Member Since: 09 Jun 2013
Location: Dorset
Posts: 228

Thats what I thought! Although OEM is c.£85 and "LR Genuine" is c. £143?

So the plot thickens - got under the bonnet this evening after getting the kids to sleep and the top hose is just sat on the sound proofing cowl! Would this not being connected after the loom change (by the Independent) cause the 4.40 reading from the Autocom?

Still getting to grips with the more 'technical' aspects of the TD5 - so apologies for the questions!

T.

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Admin note: this post has had its images recovered from a money grabbing photo hosting site and reinstated

2002 110 CSW TD5, Zambezi Silver
1995 110 CSW 300TDi - SOLD

28th Aug 2015 9:02pm

mk1collector

Member Since: 17 Sep 2009
Location: West Yorkshire
Posts: 6769

That's for the breather on the rocker cover so could have been left off after the injector loom replacement. Three 13mm bolts to take the plastic cover off and a pair of pliers to put the pipe back on. I don't think that would do anything to the maf but others mat know better. Ray
My build thread
http://www.defender2.net/forum/topic17615.html

28th Aug 2015 9:34pm

tasr12

Member Since: 09 Jun 2013
Location: Dorset
Posts: 228

Thanks,I know that was left off after they did the loom, just hopefully querying whether it would make a difference to the MAF. Guessing not so will look at replacing... 2002 110 CSW TD5, Zambezi Silver
1995 110 CSW 300TDi - SOLD

28th Aug 2015 9:36pm

dorsetsmith

Member Since: 30 Oct 2011
Location: South West
Posts: 4554

AL services

landrover specialist

BH15 3SZ 01202 668666

28th Aug 2015 9:40pm

tasr12

Member Since: 09 Jun 2013
Location: Dorset
Posts: 228

Used AL previously but not this time!

I think it's running well despite the MAF seemingly not working, what difference will a replacement make being new to the TD5 world? 2002 110 CSW TD5, Zambezi Silver
1995 110 CSW 300TDi - SOLD

28th Aug 2015 9:50pm

mk1collector

Member Since: 17 Sep 2009
Location: West Yorkshire
Posts: 6769

With it disconnected the Ecu falls back on default settings so with a working maf fitted it should give slightly better performance and mpg or atleast mine did. Ray
My build thread
http://www.defender2.net/forum/topic17615.html

28th Aug 2015 10:00pm

tasr12

Member Since: 09 Jun 2013
Location: Dorset
Posts: 228

Good enough for me - I guess I will be giving Bell a call - seems easy enough to change unless I've missed something?!

The gas strut for the rear door may now have to wait - pity! 2002 110 CSW TD5, Zambezi Silver
1995 110 CSW 300TDi - SOLD

28th Aug 2015 10:07pm

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