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Paul1275s

Member Since: 21 Apr 2019
Location: East Sussex
Posts: 80

Down on power/not boosting...

TD5 220k on it, replaced exhaust manifold, new MAF fitted. Wastegate appears to be free moving, new injector harness.
It seems to run ok after disconnecting the battery but then loses power again after a time. Starts instantly hot or cold. Doesn’t smoke excessively. Any prime suspects? It doesn’t seem to make much difference when MAF is disconnected, was an eBay special MAF sensor. 2003 Defender 110 TD5 SW
2003 Caterham 7
2006 Mini Cooper GP

22nd May 2019 8:27pm

Paul1275s

Member Since: 21 Apr 2019
Location: East Sussex
Posts: 80

Ok, gonna check red ecu plug and look at cat. 2003 Defender 110 TD5 SW
2003 Caterham 7
2006 Mini Cooper GP

23rd May 2019 9:15am

lightning

Member Since: 23 Apr 2009
Location: High Peak, Derbyshire
Posts: 2848

The engine should run OK with the MAF unit disconnected, it won’t be at its best but will perform fairly well (my 110 TD5 will still do 70mph)

23rd May 2019 12:54pm

fred1922

Member Since: 04 Jun 2018
Location: Bomaderry
Posts: 1

It is difficult to see if wastegate shaft is moving without removing cover guard, two pop rivets. If car had been unused for some time, it would certainly be worth more attention.

23rd May 2019 11:09pm

gazman

Member Since: 17 Aug 2015
Location: Liverpool
Posts: 652

What fuel pressure are you getting? Mine was dog slow and wouldnt boost when the high pressure stage of the fuel pump died. When was the fuel filter last changed? 2014 - current ..... 2003 defender td5 90 (my car)
2009 - current .... 2005 zx10r

25th May 2019 9:45am

Paul1275s

Member Since: 21 Apr 2019
Location: East Sussex
Posts: 80

Not sure how to measure, I assume I'd have to take it to a garage? I'd imagine the filter is way overdue going on the rest of the previous maintenance! Red plug was full of oil, I've given it a damn good wash out with electrolube, I think it'll need a few more goes... 2003 Defender 110 TD5 SW
2003 Caterham 7
2006 Mini Cooper GP

25th May 2019 9:50am

landy andy

Member Since: 15 Feb 2009
Location: Ware, Herts
Posts: 5729

2006 Defender 110 Td5 USW Zermatt Silver

Good call on fuel filter.

Start with the easy stuff first. Air and fuel filter.

25th May 2019 10:05am

michaelwl

Member Since: 19 Nov 2014
Location: Durban
Posts: 65

Paul1275s wrote:
Not sure how to measure, I assume I'd have to take it to a garage? I'd imagine the filter is way overdue going on the rest of the previous maintenance! Red plug was full of oil, I've given it a damn good wash out with electrolube, I think it'll need a few more goes...

If the red plug has oil in it, then you should chance the injector harness as that's were it leaks from, and also clean out the whole loom from the harness down to the red plug. 2002 110 TD5 White
1981 S3 R6 Matt Green - Now used as game viewer
2013 Discovery 4 XS

25th May 2019 10:27am

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