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Ojp26

Member Since: 01 Oct 2016
Location: Newcastle upon Tyne
Posts: 2

Down on Power

Hello all,

I'm new to the forum, I've been browsing topics etc but can't seem to diagnose the problem with my 04 td5.

It all started when I fitted the EGR bypass, we went on a long run and I noticed some black smoke when accelerating and power was down a bit. To cut a long story short the issue seemed to block the cat and blow the exhaust manifold.

I have fixed the manifold and replaced the downpipe with a decat downpipe, however it's not been running right since. I still have no power from what seems to be a misfire under load.

To try and solve the lack of power I have replaced all of the turbo hoses, replaced the injector wiring loom (no oil in ECU, but there was some in the harness), I have also checked and lubricated the turbo actuator.

I'm at a bit of a loss as to what to do next. Any ideas would be much appreciated!

Cheers, Owen

1st Oct 2016 1:13pm

4RF RDS

Member Since: 19 Jul 2015
Location: Ottawa
Posts: 897

2000 Defender 110 Td5 XS CSW Epsom Green

Have you plugged it in and are there any codes? Try that first if not already done. 2010 Range Rover MkIII Autobiography Super Charged (Idris)
2003 Range Rover Mk III (Desmond FitzWilliam)
2000 Defender 110 CSW TD5 (CTX)
1992 Range Rover Classic (Lizzy)
1972 Series III 300 Tdi (Stanwood)
1967 MGB GT

Every normal man must be tempted at times to spit on his hands, hoist the black flag, and begin to slit throats.
H. L. Mencken (1880 - 1956)

1st Oct 2016 1:30pm

mk1collector

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

Unplug the maf and have a good run, also did you change the injector loom if there was oil in the harness?

Edit, just seen you've changed the injector loom. Ray
My build thread
http://www.defender2.net/forum/topic17615.html

1st Oct 2016 2:06pm

Ojp26

Member Since: 01 Oct 2016
Location: Newcastle upon Tyne
Posts: 2

Thanks I will try unplugging the MAF and see I replaced it less than 3 months ago (using a genuine part). I guess any crap going through could have knackered it.

Unfortunately I don't have a code reader, however I might have to look into getting one.

1st Oct 2016 2:22pm

Alextd5

Member Since: 11 Feb 2017
Location: Gloucestershire
Posts: 322

2006 Defender 90 Td5 XS CSW Bonatti Grey

Down on power

Sticking wastegate on Turbo?

3rd Oct 2017 8:44pm

bankz5152

Member Since: 02 Feb 2017
Location: South London/North Kent
Posts: 2058

Clean the MAP sensor as well.

When you fitted the bypass pipe did you use a gasket and is it properly torqued up and fully connected?

You can check the MAF is working with a voltmeter, I believe Paddocks have a video on their website showing how.

Also check there are no splits in the intercooler, usually shows by excess oil showing.

4th Oct 2017 10:47am

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