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hank

Member Since: 12 Sep 2016
Location: South Wales
Posts: 2299

2007 Defender 110 Puma 2.4 DCPU Stornoway Grey

I have had similar symptoms twice... Both simple cheap fixes so relatively painless places to start (aside from skinned knuckles).

First was boost leak - simple fix, find leaking component and replace/repair. For me it was a split boost pipe... Hope it isn't a split intercooler since you've already uprated it!

Second time sticky turbo actuator - see video below. Clean and lubricate actuator arm and pivot points. I also ran a can of Wynns Turbo cleaner direct through the turbo turbines https://www.amazon.co.uk/gp/product/B009K39UMM/

> 110 XS Double Cab

10th Dec 2019 9:01am

DavinaTree

Member Since: 23 Jun 2019
Location: East Sussex
Posts: 14

2011 Defender 110 Puma 2.4 USW Alaska White

guys thanks for all your helpful comments as always- i am still trying to get to the bottom of it- my knowledgeable mechanic says there's nothing wrong with it- he plugged into autologic- we checked the turbo actuator movement and seemed to be okay - il check again as best i can for leaks- the potential chafing of loom - fuel filter tightness - and recheck and lubricate the turbo actuator. My mechanic said it would almost certainly run like

if intercooler was split so wouldn't be that.

The funny idle seems very intermittent- injectors seemed normal on autologic. Was thinking maybe SCV but don't want to chase a phantom fault.

It still just feels a little down on power to me though and doesn't feel as "anti-stall" like as it used to in lower gears. had so much low down torque before. head scratching continues.

one possible thing we considered is maybe the map was changed when my local specialist did the software side of EGR delete using BAS patch. (the map i had on there wasn't BAS). However the issue pre dates the EGR delete so I cant see it myself.

I would love to know whether it has been physically blanked EGR valve side , cooler side - both - or neither

I wanted to get to the bottom of it before having anything else done on it but as its seemingly so partial and time presses on...

Week starting 6th its going in for: fitting bilsten shocks and steering damper, heavy duty clutch, hybrid turbo, and (although my mechanic says it will drone too much) a new exhaust with no centre silencer.

After that if issues still discernable by way of low down torque I am going to catch up with the chap who remapped it previously to find out if his map is still whats on it. He seems to think it will need dynoing to map for the hybrid turbo after install, but hybrid manufacturer suggests empire tuning can map for it from mobile van.

Hope everyone had a cracking xmas, I got a coffee machine, and the socks. Carry on!

29th Dec 2019 9:16pm

DavinaTree

Member Since: 23 Jun 2019
Location: East Sussex
Posts: 14

Update - intermittent loss of power/boost issue still unresolved- going to check the entire loom from turbo actuator across the engine head- so many others have pointed to this and I’ve ruled out a lot of other things. Intermittent power loss seems to be the most common fault in these 2.4 pumas. Hopefully il get to the bottom of it. Need to fit an ultraguage or something similar so I can monitor boost and hopefully EGTs. Im also looking for a 102mm diameter stiff walled/silicon hose to further improve the air intake performance- anyone got any pointers where to buy the right thing for good price?. Think need to get all hoses changed out for silicon to rule out them being deformed flat by boost or summat. Any suggestions not already tried welcome!

25th Apr 2020 4:45pm

custom90

Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20348

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

25th Apr 2020 5:38pm

DavinaTree

Member Since: 23 Jun 2019
Location: East Sussex
Posts: 14

VCV has been recently replaced or I would agree. It’s very intermittent issue - need ultraguage or similar to confirm but pretty sure it’s losing boost - my current hunch is it’s the wiring loom that runs across the head - and comes to turbo actuator - mine is an air con version - supposedly worse for putting strain on this loom at the actuator end - however reading reports on here that even non air con ones have suffered major changing issues on this loom.. will investigate over coming days

25th Apr 2020 9:10pm

kcj113

Member Since: 12 Jul 2018
Location: cape town
Posts: 1

Any update? Did you fund what’s Wrong?

7th Jun 2020 8:50pm

G1WJG

Member Since: 20 Apr 2020
Location: Lisburn
Posts: 8

2007 Defender 90 Puma 2.4 CSW Santorini Black

I too am having a similar problem.

2007 Puma 90. Standard apart from air filter and centre pipe exhaust removed. I loose turbo power after about 10 to 15 mins of driving. Only sometimes does it through a P0299 boost error, but mainly no MILs show. If I wait for 10 mins or so, back to normal, until another 10 mins or so.

The only thing I’ve done so far is remove and clean out the EGR (wasn’t too bad at all). After that, it run run for a little longer, but now back to the 10 mins or so...

Watching this thread with interest.

13th Jun 2020 10:05am

G1WJG

Member Since: 20 Apr 2020
Location: Lisburn
Posts: 8

My problem turned out to be sticky vains on the turbo. Reconditioned turbo fixed the problem!

Hope this helps someone...

20th Jul 2020 8:37pm

topless_matt

Member Since: 29 Mar 2015
Location: norfolk
Posts: 68

2007 Defender 90 Puma 2.4 HT Tonga Green

VCV would be my bet. Had to replace mine the other day with similar symptoms. Easy to do if you have a couple of 3/8 socket sets. Need to extensions and ujs. Hold my beer and watch this!

21st Jul 2020 1:04pm

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