Discovery 4, 2011: The engine works perfect in idle and in driving up to 2200 - 2500 rpm.
On that rpm (it dooesn't matter the speed) the car it looks that is on fuel or air starvation. There is no more accelaration and
if we press the pedal we have vibrations from the engine but not noise as an engine failure. There are NO TROUBLE codes for a problem.
What we did till now: The car is coming from a full (body off) service.
Both turbo full service and check
DPF off (with a program)
EGR off (with a program) and we closed them
High fuel pressure pump - service
6 injectors - Service and new codes in ECU
Turbine Shut off valve check and new gaskets
Turbine Shut off Compressor valve check
Vaccum system check
Vaccum valves check
Generator and Starter full service
Low fuel pump
New parts : 2*MAF, Manifold sensor, Secondary turbocharger boost pressure sensor, Fuel pressure control valve,Fuel pressure sensor,Volume control valve (on high pressure pump), 2 Manifolds, Lamda sensor
During the service changed: All the filters, new battery, fuel pressure belt, motor belt, AC belt, water pump, fuel pump, oil (castrol C1.5W-30),valvoline, oil cooler, gaskets, fuel return pipes........almost everything.
Checked: By smoke all the pipes, and the manifold (no problems), the evaporation system (no problems), all the sensors and the valves work well.
BUT the problem remains the same.
The only thing that we didn't do yet is the ECU off and reload again.
As you can understand I spend enough money without a solution and I need help and probably from more professionals or from people who had the same problem and they found the solution.
On that rpm (it dooesn't matter the speed) the car it looks that is on fuel or air starvation. There is no more accelaration and
if we press the pedal we have vibrations from the engine but not noise as an engine failure. There are NO TROUBLE codes for a problem.
What we did till now: The car is coming from a full (body off) service.
Both turbo full service and check
DPF off (with a program)
EGR off (with a program) and we closed them
High fuel pressure pump - service
6 injectors - Service and new codes in ECU
Turbine Shut off valve check and new gaskets
Turbine Shut off Compressor valve check
Vaccum system check
Vaccum valves check
Generator and Starter full service
Low fuel pump
New parts : 2*MAF, Manifold sensor, Secondary turbocharger boost pressure sensor, Fuel pressure control valve,Fuel pressure sensor,Volume control valve (on high pressure pump), 2 Manifolds, Lamda sensor
During the service changed: All the filters, new battery, fuel pressure belt, motor belt, AC belt, water pump, fuel pump, oil (castrol C1.5W-30),valvoline, oil cooler, gaskets, fuel return pipes........almost everything.
Checked: By smoke all the pipes, and the manifold (no problems), the evaporation system (no problems), all the sensors and the valves work well.
BUT the problem remains the same.
The only thing that we didn't do yet is the ECU off and reload again.
As you can understand I spend enough money without a solution and I need help and probably from more professionals or from people who had the same problem and they found the solution.
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