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ronwong

Member Since: 28 Jun 2012
Location: Singapore
Posts: 120

2012 Defender 110 Puma 2.2 SW Orkney Grey

Hesitation/P2263-22 and P00BC-00 on Puma 2.2 with DPF

My car is having some serious asthma situation and I have no luck pinpointing it down.

The car sometimes randomly goes into a vacuum state. Is, the MAP sensor returns 1 barometer or 14.7 psi on ODB readings normally at idle.

Sometimes it goes to 0.7 atm or 9.9psi. THis stays in this state anything from 2 mins to 30 mins. And you can shut down the car, lock it, turn it on again, and it will still be 9.9psi if you shut it down when its low pressure.

I recently is able to replicate to make it get into this vacuum state by accelerating it hard and drag it up, ie push the pressure to 36psi on long acceleration. Once you slow down the pedal, it may get into this state of 70% of atm in the intake manifold.

No, my MAP sensor is fine. I have checked for leaks in my intercooler pipes and nothing seems aparent. They are allisport silicons, I dont suppose they will split.

In long drags of acceleration, it may also throw you into limp mode with P2263-22 code alone or together with P00BC-00.

Any clues?

If under vacuum state, the "hesitation" is very apparent as in you step on acceleator, nothing happens, till the psi goes to about 15 then it will surge forward, and this happens at every gear change.

8th Oct 2015 3:24am

Roy5695

Member Since: 15 Feb 2014
Location: Cornwall
Posts: 1123

2011 Defender 110 Puma 2.2 XS DCPU Indus Silver

This to me points to a sticky turbo actuator link. I've never had this problem myself but read many threads about it. There is a way of disconnecting the link and freeing up the linkage but I'm unsure how to do this. Hopefully someone will be along shortly with some more help.

8th Oct 2015 9:28am

Eduardo

Member Since: 28 Aug 2008
Location: Región Metropolitana
Posts: 2109

2007 Defender 110 Puma 2.4 SW Stornoway Grey

Happens to me something similar (randomly loss of power) and happens to be the MAF that was not reading correctly.
Can you read the MAF values?

Cheers Eduardo

MY 2007 110 SW PUMA 2.4: Big Fog of 64'
MY 1994 Jayco 1207 Folding camper: "El Tremendo"

Click image to enlarge

8th Oct 2015 3:47pm

bell-auto-services

Member Since: 08 Jul 2007
Location: North Yorkshire
Posts: 2232

2013 Defender 110 Puma 2.2 USW Orkney Grey

If only on long hard drags where the car is working make sure its not temperature related because you can get a similar fault when the turbo actuator gets to hot and the motor starts to stick or the vgt mech sticks, it can then draw to much current and the ecu assumes a circuit fault.

I assume you are still standard exhaust system ?

Pete.

8th Oct 2015 4:52pm

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