Member Since: 18 Jun 2020
Location: Plymouth
Posts: 10
Restricted performance uphill
I’ve literally been reading nonstop since this started. My 2011 D4 started doing this about 3weeks ago, it only happens accelerating uphill at about 50mph on the flat I can cruise at 70+ no issues whatsoever.
Cleaned the MAF and that’s not worked. Are there any other basic checks anyone would recommend before taking it to the garage?
If anyone can recommend an independent that’s good with discos in Plymouth or near let me know.
Any help would be great.
10th Oct 2020 3:32 pm
ianm27
Member Since: 02 Jun 2016
Location: Hertfordshire
Posts: 2154
Can't help with recommendations near Plymouth.
I would suggest you need to get the codes read, either by an indy or a kind member near you with an IID From what you are experiencing it could be a leaking inlet manifold but without the codes it's just guess work.Uncle Ray's spare wheel protector
Limo Tint
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10th Oct 2020 3:43 pm
Moo D3 Decade
Member Since: 13 Aug 2010
Location: UK
Posts: 14414
Split manifold?D4 HSE EU6 (Known as Jeeves)
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Sold - D4 HSE (Known as Gerty)
No longer the Old Buses original owner
231,000 miles and counting
05 S manual owned from March 2005
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10th Oct 2020 4:55 pm
Dannyson
Member Since: 14 Oct 2014
Location: Newquay, Cornwall
Posts: 820
How long into the road trip were you? - a while ago now, my new 2016 D4 went into this mode when going uphill - basically because, I think, the engine wasn't 'warmed up enough'.
Just a thought..... If I go uphill now and the engine hasn't reached 'ambient temperature' - I back off the revs...2016MY Discovery HSE - Black
2009MY Toyota Land Cruiser (Lc4) - Black
10th Oct 2020 9:46 pm
MikeBob
Member Since: 19 Sep 2016
Location: Pretoria
Posts: 115
Read the error codes first. On my D4 it was a rubber T piece that split near the vacuum pump so the crossover valve wasn’t operating correctly
11th Oct 2020 4:26 am
CamRSA
Member Since: 18 Jun 2020
Location: Plymouth
Posts: 10
First time it happened I was a good 3hrs into a 3.5hr trip. On the return a week later it was exactly the same, both times going up hill.
Now it’s instant the moment I accelerate up any significant incline. I’ll get the codes read and get it booked in, I’ll update on here but it’s probably going to be similar to what many others have experienced.
Been driving TD5s my whole life until 3 months ago before making the jump, now I’m dealing with this! Fun times.
11th Oct 2020 9:13 am
CamRSA
Member Since: 18 Jun 2020
Location: Plymouth
Posts: 10
So I got:
P010C mass or volume air flow B circuit low
P006A MAP Mass or volume air flow correlation
P010B mass or volume air flow B circuit range/performance
Cleared them, cleaned the MAP, cleaned the MAF for the second time. Took it for a spin, seemed fine then dropped into RP on the last hill before home.
Checked faults when home and just got P006A. There is a big old black sludge explosion on the n/s under the engine cover as well.
I’ve got a 130mi journey tonight/early tomorrow morning I literally cannot miss. Worst case if I drive what am I looking at possibility wise
11th Oct 2020 10:24 am
CamRSA
Member Since: 18 Jun 2020
Location: Plymouth
Posts: 10
Phots
11th Oct 2020 10:29 am
DrRobH
Member Since: 10 Oct 2015
Location: Hampshire
Posts: 927
Take it to Mark Kelly in TavistockVisitor from fullfatrr.com
RR Vogue SE 2011 4.4 TDV8
1974 Lightweight
11th Oct 2020 10:58 am
CamRSA
Member Since: 18 Jun 2020
Location: Plymouth
Posts: 10
Ya I’ve got hold of him. He’s worked on my defender before just wasn’t sure how he was with discos. Thanks for the steer
2011 D4 XS - OBD port protection, RLD spare wheel protector, All LED interiors lights, Timed Climate enabled, iiD tool paired.
2011 D4 Landmark - Stolen from same dealer before I paid for it
2011 D4 GS - Stolen whilst at dealer ... All LED interiors lights, DRLs, Spare Wheel protector.
1996 300Tdi - Eaten by tin worms
11th Oct 2020 11:23 am
CamRSA
Member Since: 18 Jun 2020
Location: Plymouth
Posts: 10
Member Since: 18 Jun 2020
Location: Plymouth
Posts: 10
Cheers man.
Just had a little dig and the n/s manifold is cracked. All down the top just under that pipe where all the oil is coming from.
Will get it booked in and replaced. Might do both at the same time if this is what i can expect from the other one. Any other jobs worth doing while I’m getting this fixed?
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From what you are experiencing it could be a leaking inlet manifold but without the codes it's just guess work.
