↓ Advertise on Defender2 ↓

Home > Td5 > Help! Td5 loosing power
Post Reply  Down to end
Page 1 of 1
Print this entire topic · 
OWS246



Member Since: 04 Apr 2024
Location: Stroud
Posts: 15
United Kingdom 2006 Defender 110 Td5 CSW Tonga Green
Help! Td5 loosing power
Hi so I have a 1999 td5 that has lived in some pretty harsh conditions!

The current problems are when under heavy load (hills) the car engine warning light comes on and the car looses power when this happens the turbo goes from being barely audible to a very high pitched spinning noise, followed by complete drop in power leading to it sometimes cutting out or going to a struggling idle and a lot of black smoke. The throttle response also completely goes.

Any responses are hugely appreciated! Defender TD5 110 CSW Tonga Green 2006
Defender TD5 110 CSW Caledonian Blue 1999
Post #1043620 23rd Aug 2024 9:46am
View user's profile Send private message View poster's gallery Reply with quote
custom90



Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20201
United Kingdom 
Likely due to Turbo actuation and sticky vanes, the noise is the actuation stuck open, which in turns triggers limp mode which then cuts power. NEVER SURRENDER! ⛽️🛢️👨‍🔧🧰⚙️ RED, WHITE & BOOST! 🇬🇧
Post #1043623 23rd Aug 2024 10:01am
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: 5607
2006 Defender 110 Td5 USW Zermatt Silver
It sounds like one of the intercooler hoses is collapsing under the high pressure. If so it would be better in the cold, and worse with heat as the hoses would be softer. It could be a split in a hose, but I think that to be more progressive and not so abrupt.
Post #1043626 23rd Aug 2024 10:41am
View user's profile Send private message View poster's gallery Reply with quote
OWS246



Member Since: 04 Apr 2024
Location: Stroud
Posts: 15
United Kingdom 2006 Defender 110 Td5 CSW Tonga Green
Ok so I have disconnect the actuator arm, and sprayed silicon onto it this means the dump valve can move pretty freely now.

I can check the pipes they feel soft in the heat but it seems to be abit better when the car is warm, will have another look!

Just disconnected the actuator pipe and when Revving in idle which it is fine at this is blowing air shouldn’t it be sucking? Defender TD5 110 CSW Tonga Green 2006
Defender TD5 110 CSW Caledonian Blue 1999
Post #1043630 23rd Aug 2024 11:13am
View user's profile Send private message View poster's gallery Reply with quote
Penfold_6290



Member Since: 22 Sep 2021
Location: Dorset
Posts: 312
United Kingdom 2002 Defender 110 Td5 CSW Epsom Green
The pipe you refer to operates the wastegate which vents off excess boost, therefore it will 'blow' not
'suck' as it comes from the compressor side of the turbo.

If the wastegate is seized, as your revs rise and the boost increases the vehicle registers over boost and will limit power. One way to check it is free is to use a bike pump on the hose to see if you can get the wastegate to open using air pressure. Avoid an airline as the wastegate doesn't require very much pressure to open.

The standard Td5 turbo is a basic design so there are no vanes to seize or actuators to worry about, just a simple wastegate.
Post #1043659 23rd Aug 2024 3:38pm
View user's profile Send private message View poster's gallery Reply with quote
MadTom



Member Since: 10 Sep 2013
Location: Olomouc
Posts: 614
Czech Republic 1999 Defender 130 Td5 HCPU Baltic Blue
Any grease or oil on the wastegate turbo lever will burn and seize it more than before. Just disconnect it from the controll rod and move. It must move freely and easily. Withou disconnecting, you are fighting strong spring in the controller. "Drobek" = The Small One - Discovery 2, "Blufínek" = The Blue Thing - Defender 130, and for me at least Ford Mondeo Smile
Post #1043784 24th Aug 2024 9:20pm
View user's profile Send private message View poster's gallery Reply with quote
BaronDefenders



Member Since: 28 Jun 2019
Location: London/Cotswolds
Posts: 893
United Kingdom 2004 Defender 90 Td5 SW Santorini Black
Possibly turbo over-boost. Are you able to measure the boost pressure while driving? Charlie

1949 Series 1 80 (SOLD)
2002 Td5 90 (SOLD)
2008 Freelander 2 (SOLD)

1958 Series 2 88 Pastel Green (2019 LR Legends Best Restored)
1983 V8 110 Limestone (Previously owned by Tom Sheppard MBE)
2004 Td5 90 Santorini Black (Td5INSIDE Powered & Rebuilt by CSK)
2012 Puma 110 Zermatt Silver (Overlanding Build)

Instagram: @BaronDefenders
Post #1043806 25th Aug 2024 8:01am
View user's profile Send private message View poster's gallery Reply with quote
Dinnu



Member Since: 24 Dec 2019
Location: Lija
Posts: 3381
Malta 2012 Defender 90 Puma 2.2 CSW Santorini Black
Check air filter too. Do Td5s have possibility of collapsing the intake hose between air filter and turbo inlet? But that would be in extreme cases. 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing
2012 90 CSW, 2.2TDCI, Santorini Black
Post #1043814 25th Aug 2024 9:34am
View user's profile Send private message View poster's gallery Post Reply
Post Reply  Back to top
Page 1 of 1
All times are GMT + 1 Hour

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