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Jefinabox

Member Since: 21 Jul 2021
Location: West Yorkshire
Posts: 25

Intermittent power loss

Ey up,

I've had my 2008 2.4 for a week,

It's got about 70k miles on, an alive stage 1 remap and silicone intercooler hoses.

Occasionally when I drive from cold or warm, it'll make no power bit plenty of black smoke, it's as though the turbo isn't spooling.

If I turn the engine off and on, it'll do it again straight away. If I lock and unlock, then start the problem clears.

Does anybody have a clue what this could be? Thanks in advance

23rd Apr 2022 5:44pm

custom90

Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20367

Plug in and look for DTC’s.
If you don’t have that available to you,
lube your turbo actuator pivot points.

Try cleaning your MAF and MAP sensors (don’t touch use brake or MAF cleaner only).
Check air filter.
Consider changing the VCV, look at all the above first before this though.

Ideally you want to have it plugged in to find the codes if any are present for faults. $W33T $0U7H3RN $UG4R
🇬🇧🏴󠁧󠁢󠁥󠁮󠁧󠁿🏴󠁧󠁢󠁷󠁬󠁳󠁿🏴󠁧󠁢󠁳󠁣󠁴󠁿🇮🇪🇺🇸⛽️🛢️⚙️🧰💪

23rd Apr 2022 6:09pm

bear100

Member Since: 22 Mar 2010
Location: South Wales
Posts: 1917

2010 Defender 110 Puma 2.4 USW Santorini Black

Could be a delaminating turbo hose? 2016 Range Rover Autobiography 4.4 TDV8
2010 110 XS Utility 2.4TDCI
2010 Range Rover Sport TDV8 (gone)
2007 Discovery HSE TDV6 (gone)
1993 110 csw 200 tdi (gone)
1994 90 HT 300 tdi (gone)
1994 discovery 300tdi (gone)
90 hybrid 3.5 v8 (gone)
Range rover bobtail 3.5 v8 (gone)

23rd Apr 2022 7:32pm

Jefinabox

Member Since: 21 Jul 2021
Location: West Yorkshire
Posts: 25

Thanks for that, my cheap obdii scanner returned no codes, so I'll clean everything and lube the turbo pivots tomorrow and see what happens.

24th Apr 2022 5:08pm

custom90

Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20367

One of the few things that doesn’t flag a DTC is the VCV. When that fails or is risking it doesn’t show anything up.
Turbo actuator can get sticky, best to remove the upper linkage carefully and operate wastegate by hand then lube be careful not to lose the circlip.

Or if you want to be on the safe side lube the pivot points in situ for now and leave it at that.

Worth trying anyway. $W33T $0U7H3RN $UG4R
🇬🇧🏴󠁧󠁢󠁥󠁮󠁧󠁿🏴󠁧󠁢󠁷󠁬󠁳󠁿🏴󠁧󠁢󠁳󠁣󠁴󠁿🇮🇪🇺🇸⛽️🛢️⚙️🧰💪

Last edited by custom90 on 29th Apr 2022 7:55pm. Edited 1 time in total

24th Apr 2022 8:11pm

Jefinabox

Member Since: 21 Jul 2021
Location: West Yorkshire
Posts: 25

Just an update, I followed your advice and cleaned/lubed everything. The problem hasn't been back since and I've got a spare vcv just in case.

Ta

29th Apr 2022 6:38pm

custom90

Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20367

Good news.

$W33T $0U7H3RN $UG4R
🇬🇧🏴󠁧󠁢󠁥󠁮󠁧󠁿🏴󠁧󠁢󠁷󠁬󠁳󠁿🏴󠁧󠁢󠁳󠁣󠁴󠁿🇮🇪🇺🇸⛽️🛢️⚙️🧰💪

29th Apr 2022 7:55pm

Jefinabox

Member Since: 21 Jul 2021
Location: West Yorkshire
Posts: 25

Ugh, the problem came back so I swapped the vcv for a new one, I didn't do the learning program because I don't have the capability.

Exactly the same thing happens, sometimes it's fine, others I've got no power and loads of smoke.

I'll dismantle the actuator tonight and lube properly.

6th May 2022 9:19am

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