Member Since: 09 Feb 2014
Location: Truro
Posts: 2407
Restricted Performance - No Fault Codes
Good morning wise ones.
Before my service earlier this month I had a couple of instances of restricted performance, with the red triangle) whilst towing, on my 2010 D4 with 110,000 miles.
I still can’t drive, but the driver said no loss of power. We stopped and I read the codes but nothing relating to a possible problem. Codes cleared and message gone. It returned again later in the journey, whilst also going up a hill. Codes checked and still nothing.
I was checking for any smoke during the drive but nothing, although the engine was idling for a long time at the start of the return journey (stuck in a field, rescued by a tractor and again at the home end of the drive, requiring winching out by a 90), after starting it up a while after this there lots of white/light grey smoke.
Asked for this to be looked at during the service, but three weeks on, I don’t even have the bill, much less know what was done.
Anyway, yesterday the red triangle was back (not towing) my wife was driving and this time performance was restricted. Codes checked and nothing listed (other than what’s always there (lost communication with the FBH and an issue with the amplifier, all of which work anyway)).
Cleared what was there and fine again for about 10 miles before returning, still no codes.
I wondered about a split manifold, but from searching on here, that seems to come with some muck under the engine cover, which I don’t have. Looking at the MAF sensors earlier, they seem a little dirty and I will clean them, but the one nearest the bulkhead did have a trace of oil at the bottom of the pipe.
Ultimately without any codes I’m not sure what else to try, as no obvious splits in any hoses that I could see and hopefully having only just been serviced, they would have picked those up given I said about the restricted performance issues.
As always, any ideas would be much appreciated.Andy
29th Feb 2020 11:13 am
Moo D3 Decade
Member Since: 13 Aug 2010
Location: UK
Posts: 14417
Split inlet manifold. Get a smoke test done.D4 HSE EU6 (Known as Jeeves)
New Defender L663 110 SE (known as Noddy!) Sold
Sold Volvo XC90 R-Design (known as Basil)
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
D4 Face lifted
Still original injectors and turbo
V8 Front brakes
BAS Remap, Allisport Intercooler and deCat
EGRs blanked
T-Max split charge
Hanibal Expeedition rack
Prospeed ladder
Duratrac tyres
IID BT
BAS FBH control
29th Feb 2020 1:49 pm
Fitzy73
Member Since: 09 Feb 2014
Location: Truro
Posts: 2407
Thanks very much, sadly I had a feeling that was going to be the problem.Andy
29th Feb 2020 6:47 pm
marsie
Member Since: 28 Feb 2010
Location: Sheffieldish
Posts: 1807
Mine did this a few months ago. Turned out to be the o ring on the throttle body. New o rings and no more issues 8)Previous Discos
1989 200tdi 3dr
1994 300tdi ES
1995 3.9 ES (x3)
2000 4.0 adventurer
2001 4.0 ES
2005 D3 HSE (zambesi silver)
2007 D3 SE (Lugano teal)
2011 D4 XS (Baltic Blue)
2008 D3 HSE PREMIUM (buckingham blue)
2009 D4 XS (Nara bronze)
2006 D3 Metropolis (Java Black)
2012my D4 HSE (indus silver)
2013 D4 XS (Firenze red)
Current 2017 D5 first edition (silicone silver)
15th Mar 2020 3:04 pm
Fitzy73
Member Since: 09 Feb 2014
Location: Truro
Posts: 2407
Thank you, that gives me something else to take a look at
So far at least, cleaning the MAF sensors seems to have helped.Andy
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