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Markez79

Member Since: 27 Jun 2018
Location: South West
Posts: 201

HELP NEEDED: 2.4TDCI PUMA

Hi,

When setting off from a cold start this evening there was a loss of power followed by a surge and then loss of engine power and coasted to a stop. After that i was able to restart but there was the 'loss of power and surge forwards' through the first 3 gears again. Eventually the issue seemed to clear but just didn't 'feel' right.

Could this be an issue with the battery? I was told it wasn't particularly healthy at my last service.......or something more sinister?

Any help/advice greatly received.

Thanks

Mark

30th Oct 2018 7:34pm

williamthedog

Member Since: 29 Dec 2012
Location: south wales
Posts: 3441

I would say it's the dreaded vcv valve playing up. Plenty of information on here about it.

30th Oct 2018 7:57pm

Markez79

Member Since: 27 Jun 2018
Location: South West
Posts: 201

Many thanks for the feedback, really appreciate it. Is it a big job?

30th Oct 2018 8:03pm

williamthedog

Member Since: 29 Dec 2012
Location: south wales
Posts: 3441

Not really, about half a hours work all going well. Do a search on here it will help you get a better understanding of the job.

30th Oct 2018 8:12pm

Markez79

Member Since: 27 Jun 2018
Location: South West
Posts: 201

Thanks again. I’ve done a search but can’t see whether it is only a prob from cold or whether it is an issue when warmed up.....the fault only occurred this evening but I have a long journey on Saturday that requires the land rover, plus some moderate off roading.....

30th Oct 2018 9:19pm

MK

Member Since: 28 Aug 2008
Location: Santiago
Posts: 2448

2007 Defender 110 Puma 2.4 SW Chawton White

My faulty vcv was worse when cold Puma 110" SW

.............................................................
Earth first. Other planets later

30th Oct 2018 9:30pm

custom90

Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20612

Faulty EGR can also causing issues, as can MAF and MAP and VCV. The latter not often showing DTC's if checked.

What status is your EGR, active or blanked? If active have you had any issues with it.
Tryi cleaning your MAP and MAF sensors, this can do no harm either way they may need a clean.

When was the fuel filter last changed?
Are your fuel tank breather pipes in good condition? (Possible fuel contamination if not.)

If all of these things seem okay, then it could well be the VCV as mentioned.
Although I do think many can jump to conclusions that it is, I have had similar symtoms at times year ago but never was the VCV but many other things.

Also check your air filter isn't heavily soiled and also consider trying a fuel additive such as Millers Diesel additive.
If it is the VCV, it should help or at least keep it going okay just for now till you can sort it.
If you can't get your hands on any Millers as soon as you need it, just try some Super diesel instead.

This is assuming you don't use it, you may well already do so.
The clutch switch is another's possible culprit too, but will only show as a DTC if plugged.
If you have access to diagnostics, that's what I would do straight away. Chillin In The Backwoods🇬🇧🇺🇸
⛽️🛢️⚙️🧰💪

30th Oct 2018 9:40pm

Markez79

Member Since: 27 Jun 2018
Location: South West
Posts: 201

Many thanks Steve - great advice.

I'm trying to get it looked at asap as i need to do a long journey on Saturday that will involve some off-roading.

Unfortunately i don't have a diagnostics tool but with the bad luck I'm having with this vehicle i should probably invest in one.....faulty fuel pump, faulty ABS modulator/Traction Control unit (2.4k to replace

), faulty heater unit, new clutch etc etc.... and i've only had her 18 months.

Thanks again

Mark

31st Oct 2018 8:58am

agentmulder

Member Since: 16 Apr 2016
Location: Outer Space
Posts: 1324

Yip, EGR stuck in open position will give major loss of power. If it happens again, listen out for the chakka chakka chakka when you turn off the car, if you don't hear it, it's stuck (if that makes no sense search the forum for EGR issues) - keep in mind that if you do hear it, it doesn't mean it's not playing up.

VCV yes certainly. Annoying job, but you'll get there, lots of discussion here regarding it.

MAF/MAP easy to access, may as well give em a clean and check as a matter of course

Solved the bowel problem, working on the consonants...

9th Nov 2018 11:47pm

Markez79

Member Since: 27 Jun 2018
Location: South West
Posts: 201

It was a faulty EGR! Many thanks for all the advice.

Good excuse for a remap!!

Mark

10th Nov 2018 8:30am

Caterham

Member Since: 06 Nov 2008
Location: Birmingham
Posts: 6318

2011 Defender 110 Puma 2.4 XS CSW Stornoway Grey

yep. welcome to getting an extra 10% MPG too

10th Nov 2018 9:22am

custom90

Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20612

EGR failure struck again. Glad you got it sorted and if your anything like me glad to be shot of it. 👍🏻 Chillin In The Backwoods🇬🇧🇺🇸
⛽️🛢️⚙️🧰💪

10th Nov 2018 11:21am

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