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alwoodley72



Member Since: 14 Mar 2010
Location: salisbury, wilts
Posts: 724

England 2008 Defender 130 Puma 2.4 HCPU Alaska White
Mine had a blocked cat too, night and day after fitting cat removal pipe....( that was after replacing fuel pump, mag, egr removal , loom, etc etc!!..)
They are all now' of an age'..
Cheers. Alex 98 300 tdi 90 project
94 Range Rover vogue 4.2 lse
79 911 sc
08 130 double cab utility
Post #426024 24th May 2015 11:42pm
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K9F



Member Since: 12 Nov 2009
Location: Bournemouth
Posts: 9610

United Kingdom 2008 Defender 90 Puma 2.4 XS CSW Stornoway Grey
I know yours is a TD5 but you'll get the idea if you think it's the cause and you'll have no mither MOT time as the TD5 Cat is in such an obvious location.


Click image to enlarge


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Admin note: this post has had its images recovered from a money grabbing photo hosting site and reinstated Mr. Green  If you go through life with your head in the sand....all people will see is an ar5e!!

Treat every day as if it is your last....one day you will be right!!
Post #426060 25th May 2015 7:57am
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grafty99



Member Since: 15 Aug 2012
Location: North Devon
Posts: 4785

United Kingdom 2002 Defender 90 Td5 HT Caledonian Blue
^^ I wonder if that would work for the dpf on my 2.2 Rolling with laughter 2002 90 Td5 Station Wagon
1990 Vogue SE
Triumph Tiger Explorer 1200
Td5 90 Thread http://www.defender2.net/forum/topic50767.html
Tdi 110 Thread https://www.defender2.net/forum/topic69562.html
RRC Thread http://www.defender2.net/forum/topic54492.html
Instagram http://www.instagram.com/george_grafton
Post #426071 25th May 2015 8:53am
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JimboD3



Member Since: 09 Apr 2013
Location: Ware, Herts
Posts: 55

United Kingdom 2003 Defender 110 Td5 HT Bonatti Grey
Neat way to 'remove' the cat Smile

The 2 I/C hoses can be squashed with light pressure from one finger..........presumably this is not good ?

I thought that these hoses were under pressure when the turbo was boosting ?

Although the 110 is a '53 plate, it has done only 28k miles (definitely genuine), and I'm certain that the hoses etc are original - so perhaps it's time for a bit of bling and some silicon ones Smile

Jim Td5 110 HD Hardtop.......not quite standard Smile
Post #426078 25th May 2015 9:47am
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Fatboy Slim



Member Since: 04 Feb 2008
Location: Bridgend
Posts: 1006

Wales 
Intercooler hoses are normally soft. I'd go gen LR myself, I think the funky coloured ones are a waste of money
Post #426183 25th May 2015 5:31pm
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JWL



Member Since: 26 Oct 2011
Location: Hereford
Posts: 3443

England 2002 Defender 110 Td5 SW Coniston Green
It's a little long from the joints to get a drill into a Td5 cat Crying or Very sad
Post #426258 25th May 2015 10:12pm
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K9F



Member Since: 12 Nov 2009
Location: Bournemouth
Posts: 9610

United Kingdom 2008 Defender 90 Puma 2.4 XS CSW Stornoway Grey
Length of rod may do it. My 'cat' is fitted in the same place as a TD5 one, but I think you may not have a join in the same place as a Puma exhaust as depicted. You could consider fitting a join after the hanger perhaps for 'cat' access?


Click image to enlarge
 If you go through life with your head in the sand....all people will see is an ar5e!!

Treat every day as if it is your last....one day you will be right!!


Last edited by K9F on 26th May 2015 6:52am. Edited 1 time in total
Post #426284 26th May 2015 6:46am
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JimboD3



Member Since: 09 Apr 2013
Location: Ware, Herts
Posts: 55

United Kingdom 2003 Defender 110 Td5 HT Bonatti Grey
What's the reasoning behind 'removing' the cat - does it clog up with something over time (I appreciate my 110 is approaching 11yrs old, but the mileage is low - approx 28k) ?

Jim Td5 110 HD Hardtop.......not quite standard Smile
Post #426285 26th May 2015 6:51am
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K9F



Member Since: 12 Nov 2009
Location: Bournemouth
Posts: 9610

United Kingdom 2008 Defender 90 Puma 2.4 XS CSW Stornoway Grey
Fatboy Slim wrote:
I've had a few blocked lately giving the same fault. One was so bad it wouldn't even start.......


Removing the 'cat' will allow the engine to breathe easier and the turbo to spool up quicker. There's loads of information on the forum if you look under 'decat.' Having 'had a few blocked' Fatboy Slim may be able to elaborate. If you go through life with your head in the sand....all people will see is an ar5e!!

Treat every day as if it is your last....one day you will be right!!
Post #426289 26th May 2015 6:59am
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roel



Member Since: 08 Aug 2009
Location: Lelystad
Posts: 2039

Netherlands 2003 Defender 90 Td5 PU Caledonian Blue
The length behind the td5 cat is not the mayor problem it's the 2 bend that prevent you from drilling it out.. Roel

1984 90 2.5 na Diesel - RR V8 (1994-2001)
1997 Camel Trophy Discovery 300TDI (2001-2009)
2005 G4 Discovery III 4.4 V8 (2008-2018) It's gone but it still hurts.
2003 90 Td5 (2009-now)
Post #426347 26th May 2015 9:25am
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Fatboy Slim



Member Since: 04 Feb 2008
Location: Bridgend
Posts: 1006

Wales 
They block. Especially on low milers. Quick easy diagnostic test: take it off and take it for a blast. No need to buy/drill/hack anything off. Noisy? Yes. Detrimental? No, not for a quick jolly out to see if it's any better. Thumbs Up
Post #426453 26th May 2015 5:26pm
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JimboD3



Member Since: 09 Apr 2013
Location: Ware, Herts
Posts: 55

United Kingdom 2003 Defender 110 Td5 HT Bonatti Grey
Are there any other symptoms to be had with a blocked cat ?...........only recently I've noticed a 'tinkling' noise when the engine is under load - I initially thought it was the pads rattling again in the X-brake, but it's not.......do cats make a funny noise when they get blocked and/or start to break down internally ?

I've also been trawling the t'interweb for possible replacement exhaust systems/cat replacements - but don't you need a cat for the MoT now ? - some sites seem to advertise a 'C-Cat' rather than a 'D-Cat' pipe, which presumably looks like a cat but with nothing inside it ! Has anyone had experiences with C-Cat replacement pipes - and do I actually need a cat (2003 Td5)

Thanks,

Jim Td5 110 HD Hardtop.......not quite standard Smile
Post #426878 28th May 2015 2:27pm
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markp85



Member Since: 14 Oct 2014
Location: wrexham
Posts: 1

I had the same problem a few months ago...

it was the map sensor on the inlet manifold a few inches away from the egr valve/blank ... needed to be replaced... 2001 td5 defender
Post #463548 15th Oct 2015 4:40pm
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