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| custom90 Member Since: 21 Jan 2010 Location: South West, England. Posts: 19525  
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Clean both the MAF and MAP and see how it goes. Wear gloves, keep it really clean and don’t touch the elements. Leave to dry really well on a clean sheet of printing paper. A quality brake cleaner spray though should do the trick. Diesels Lives Matter. ⛽️🛢️👨🔧🧰⚙️
And if You Love the Country, then we’re on the same side ~ I got’ love for Britain, I got’ British pride’. 🇬🇧 |
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2nd Jul 2018 11:16am |
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| davew Member Since: 02 Jan 2012 Location: North Yorkshire Posts: 888  
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Might just be the hot ambient air temps we're getting. The standard intercooler will not reduce the temperature of the air passing through it sufficiently, that reduces air density going into the engine which, in turn means less oxygen in the cylinders so less fuel is being burnt. TD5s seem to be particularly prone to this, especially with the standard intercooler. A bigger aftermarket intercooler can help. After upgrading ours to the biggest we could fit (allowing for our auto gearbox oil cooler) it made a big difference to the available torque, especially in hot weather. Either that or just wait for the temperatures to drop and it'll be back to normal  http://www.yorkshireoffroadclub.net/ |
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2nd Jul 2018 11:32am |
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| grafty99 Member Since: 15 Aug 2012 Location: North Devon Posts: 4784 
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Have you checked your air filter and associated pipe work? 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 |
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2nd Jul 2018 7:11pm |
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| Djcla Member Since: 29 Jul 2017 Location: Gloucestershire Posts: 469
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Mine won't go above 76 I thought it was normal tbh
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2nd Jul 2018 9:12pm |
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| LandymanStefan Member Since: 30 Aug 2017 Location: Surrey Posts: 860 
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I don't think the hot ambient temperatures would make that much difference. When I went on family holidays in my parents '99 disco 2 td5 to Italy and back dad would hoon it on the italian motorways and it'd hold 90mph no problem fully laden. I know discos have a bit more grunt from stock and the different drive ratio but nothing seemed to slow that bus down.
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2nd Jul 2018 9:37pm |
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| pj2106 Member Since: 20 Dec 2012 Location: Huntingdon AKA The Shire Posts: 1500 
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Mine will easily do 85-90 even in the hot weather 2008 110 2.4 XS Utility (Hagrid)
2002 90 TD5 Hardtop (Sully) Sold 1998 300TDi D1 (Billy) Sold |
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2nd Jul 2018 9:50pm |
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| drinkdrinkdrop Member Since: 13 Sep 2016 Location: Surrey Posts: 76
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Filter looks fine but I will swap it anyway and I ran it without the pipe to the wing but didn't make any diference
I've cleaned the MAP already but not the MAF so i'll give that a go |
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3rd Jul 2018 10:43am |
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| mk1collector Member Since: 17 Sep 2009 Location: West Yorkshire Posts: 6769 
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Check for oil in the red Ecu plug. Ray
My build thread http://www.defender2.net/forum/topic17615.html |
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3rd Jul 2018 11:14am |
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| drinkdrinkdrop Member Since: 13 Sep 2016 Location: Surrey Posts: 76
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Red plug is clean, checked and cleaned a couple of months back while fixing another issue (injector harness replaced at that point as well) so all good on that front
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3rd Jul 2018 11:19am |
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| Djcla Member Since: 29 Jul 2017 Location: Gloucestershire Posts: 469
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I checked mine a while back performing similar steps to you and couldn't find anything obvious. I found the MAF made no difference if it was connected or not and I believe that indicates it's faulty but I wasn't sure.
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3rd Jul 2018 12:07pm |
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| bankz5152 Member Since: 02 Feb 2017 Location: South London/North Kent Posts: 2059 
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Got any diagnostics?
Inlet could beblocked Instagram @defender_ventures Empire Tuning - Agent |
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3rd Jul 2018 12:55pm |
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| drinkdrinkdrop Member Since: 13 Sep 2016 Location: Surrey Posts: 76
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Had diags fairly recently and nothing on there apart from the usual missing ABS etc, no engine light on. Where would I check for a blockage? I've had the inlet pipe to the airbox off and I checked the inlet manifold recently when I removed the EGR. Any other spots to check for a blockage?
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3rd Jul 2018 1:01pm |
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| DefenderJon Member Since: 01 Dec 2012 Location: Sunny Ulster Posts: 68  
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When you say the turbo actuator seems fine, have you disconnected the actuator from the wastegate and check the operation of the wastegate? I’d recommend doing this, and ensuring that the wastegate is so free that it will return to centre on its own when released. Copious amounts of a decent spray oil and loads of working it back and forward should help.
Sounds like the symptoms I was having with a sticky wategate. HTH, Jon. Defender 90 TD5 CSW - The longer I own it, the newer it gets!! |
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24th Jul 2018 9:58pm |
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| Martin 01 Member Since: 13 Feb 2012 Location: East Yorkshire Posts: 499 |
What did you end up doing to your wastegate Jon ?
Just spray it with lots of lube ? Last edited by Martin 01 on 26th Jul 2018 12:12pm. Edited 1 time in total |
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24th Jul 2018 10:18pm |
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