2010 2.4 TDCI Problems

[paul2012]

You have overboost condition!! Turbo actuator or variable geometry are your first steps

I suspect if the actuator or the VNT part of the turbo was playing up, it would throw up a code.??

I accidentally forgot to reconnect mine whilst I was fumbling around with the loom, it threw up a code as soon as I turned the ignition on.

Lord Knobrot

Your are correct Knobby1.

Faulty elec actuator would lead to P2563 Turbocharger Boost Control Position Sensor "A" Circuit Range/Performance

Variable vanes sticking due to carbon build up (Common problem) on VNT turbo with elec actuator or vac operated will lead too

P0299 Turbocharger/Supercharger "A" Underboost Condition
P0234 Turbocharger/Supercharger "A" Overboost Condition

P0299 & P0234 Can also be triggered by a faulty MAP sensor

[knobby1]

Your are correct Knobby1.

Another "rare" occurrence..!

An EGR which is "stuck closed" will also often throw up an "overboost" code....and one which is "stuck open" will often throw up and "underboost" code....as well as all the regular MAF, MAP and EGR ones.

Had all these codes happen to mine....turbo, turbo actuator and boost pipes were all fine. I just changed the EGR and all the codes went away... and to this day they've never come back.

Lord Knobrot

[johnkels]

2.4 350 2008 rwd how do you take of the egr it is tucked away at the back of the engine I can only get a spanner on to one 8 mm nut the rest are not in sight do I have to take of the exshurst manifold. only had it 5 days it has 130 000 miles runs like a dream except for the erratic tickover. Help

[knobby1]

2.4 350 2008 rwd how do you take of the egr it is tucked away at the back of the engine I can only get a spanner on to one 8 mm nut the rest are not in sight do I have to take of the exshurst manifold. only had it 5 days it has 130 000 miles runs like a dream except for the erratic tickover. Help

The exhaust manifold is on the opposite side to the EGR valve, it's easier to remove the inlet manifold to get at the EGR valve...even then you need to get underneath to get at two of the bolts.

Lord Knobrot