Rr sport f code

I have replaced the battery
Replaced alternator
Checked rear bulbs
Replaced air flow sensor
Replaced fuel filter
Replaced brake switch and it will still go into limp mode when hard acceleration.turn key off and restart and it's fine again until you give it the big heave ho.its a 2007 rr sport 2.7 v6 diesel.anybhelp would be appreciated.

Dexter247 said:

I have replaced the battery
Replaced alternator
Checked rear bulbs
Replaced air flow sensor
Replaced fuel filter
Replaced brake switch and it will still go into limp mode when hard acceleration.turn key off and restart and it's fine again until you give it the big heave ho.its a 2007 rr sport 2.7 v6 diesel.anybhelp would be appreciated.

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Get it on diagnostics and have all the codes read?

Only codes it had was front right suspension level sensor so replaced that and a code for the red suspension fault light

You’re going to need live data, when was fuel filter last changed, when did auto box last have a service?

The engine and its controls are complicated, and simply throwing parts at it isn't the way to fix it. It needs careful investigation with diagnostic equipment displaying or recording live data while its being driven.

At a guess, it sounds like the turbo vanes or actuator are at fault, but that's just an educated guess based on experience of this engine.

Got told today that the turbo actuator can seize on these.might give it a good dose of wd40 tomorrow.

Dexter247 said:

Got told today that the turbo actuator can seize on these.might give it a good dose of wd40 tomorrow.

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I did suggest turbo vanes or actuator

What code reader was used ?? Most don't read these correctly.
Common issues are
Low pressure in tank fuel pump
High pressure fuel pump
Egr valves

A simple way to moniter the turbo motor is to cylce the key and listen in behind the front left wheel while looking in with a torch. It will move freely and with minimal noise. A dose of oil may help but could mean bigger work is at hand. We had one in that squeaked upon cycling the ignition key... It failed shortly after...
It's usually accompanied by an underboost or turbo position sensor fault.