Member Since: 18 Oct 2020
Location: Midhurst, West Sussex
Posts: 144
Lack of power at low revs.
I have just bought a D3 Commercial and towed a trailer (about 1500Kg) with it for the first time today.
It doesn't seem to have a lot of torque below 2000 RPM but once over that it is fine. Is this fairly normal? I haven't driven one for over 10 years. By way of comparison, my Fiat Ducato van has much more torque from about 1400 RPM. Both are manual.
Tomorrow I will be towing 3500Kg, so will see how that goes.
I will try and get a code reader on it, to see if there are any faults logged. Perhaps the turbo is getting a bit tired.
20th Dec 2020 12:15 am
KevinD3
Member Since: 05 Aug 2020
Location: Sutton Coldfield
Posts: 1207
Could be anything until you get the codes read. Any lights on the dash, today or previously? Any issues pulling off? Had similar symptoms with egrs on their way out, have you got them blanked or are they still live?2008 HSE Stornoway Grey
My Wife thinks the D3 is a hobby, The D3 thinks the wife is 💕
20th Dec 2020 12:45 am
GDM
Member Since: 18 Oct 2020
Location: Midhurst, West Sussex
Posts: 144
No lights on the dash. The EGRs have already been blanked. Will check the codes and report back.
20th Dec 2020 12:51 am
aja4x4
Member Since: 14 Apr 2019
Location: Westbury
Posts: 2459
It could be the turbo actuator sticking
20th Dec 2020 9:15 am
GDM
Member Since: 18 Oct 2020
Location: Midhurst, West Sussex
Posts: 144
Our old TD5 used to do that but the wastegate would stick shut then it would over-boost and cut the power at about 2700 RPM.
20th Dec 2020 9:29 am
GDM
Member Since: 18 Oct 2020
Location: Midhurst, West Sussex
Posts: 144
Well, the lack of power was really quite noticeable towing 3500Kg this morning, in fact on a slight incline it was struggling to pull away. Driving it this afternoon with no trailer on, it didn't feel too bad, in fact it felt better on the return journey, so it's almost as though the power is a bit variable.
I am only getting this fault code on the engine.
Having read up on the code, it looks like it could point towards the condition of the turbo/sticking wasstegate.
20th Dec 2020 6:23 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4656
Stuck actuator rod on the turbo, a coat hanger and a long spout oil can will sort it. Remove the NSF wheel and then the heat shields to gain access. There's lots written on here to guide you. yµ (idµ - eAµ) ψ=mψ
20th Dec 2020 6:58 pm
aja4x4
Member Since: 14 Apr 2019
Location: Westbury
Posts: 2459
I would also clean your manifold pressure sensor.
20th Dec 2020 7:19 pm
GDM
Member Since: 18 Oct 2020
Location: Midhurst, West Sussex
Posts: 144
Thanks chaps. I will check the actuator and clean the MAP sensor over the Christmas break. What's it best to lubricate the rod with? Someone mentioned a spray copper grease with a 1200 degrees centigrade melting point.
21st Dec 2020 1:05 am
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4656
I use a mixture of either copper or ceramic grease mixed with engine oil to form a wet paste. An artists brush is ideal to work it into the ball and cup rod connectors.
Spray oil is not a long term solution as it will evaporate really fast once the engine gets hot, though it can be useful for getting the rod moving in the first instance. yµ (idµ - eAµ) ψ=mψ
21st Dec 2020 1:32 am
GDM
Member Since: 18 Oct 2020
Location: Midhurst, West Sussex
Posts: 144
Well, I checked the actuator today and, unfortunately, it didn't seem to be particularly seized up. The MAP sensor, however, was pretty carboned up, so I gave that a good clean. I ran out of time to take the car for a run, so will do that tomorrow.
27th Dec 2020 11:17 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4656
That might well have sorted it yµ (idµ - eAµ) ψ=mψ
27th Dec 2020 11:22 pm
Kviasen
Member Since: 24 Dec 2020
Location: Norway
Posts: 107
P023D is a fault set due to that the map sensor every time the car is started calibrates against the atmospheric pressure in the area.
This is to give the car ecu its best first hand knowledge of the situation and give as correct as possible mixture of diesel and air.
If the sensor is outside some triggerpoints fks it would sence that it is 5 meteres below sea level or on top of Mount Everest the fault code is set because it is an implausible signal.
Normaly the best is to replace sensor since it will be weakened by mechanical or chemical cleaning.
28th Dec 2020 12:24 am
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4656
Nonsense, they are robust sensors and stand up very well to careful chemical based cleaning, provided nothing is is pushed into it puncturing the diaphragm.yµ (idµ - eAµ) ψ=mψ
28th Dec 2020 12:56 am
Kviasen
Member Since: 24 Dec 2020
Location: Norway
Posts: 107
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