Hi

I recently noticed a whistle like sound coming from my engine and power loss on the motorway which prevented me from travelling over 70mph. My car would also struggle if there was a slight Incline while on the motorway and the speed would drop.

Also, the engine emissions light came up on the dash board.

I took the car to the garage and had the turbo replaced but the power loss issue remains.

I purchased a diagnostic tool and found no error codes when I connected it to my car.

Any ideas or advice would be much appreciated.

Do you still have a whistle sound as that could point to air escaping somewhere and loss of boost pressure?

The whistle sound has gone after I had the turbo replaced but the power loss is still there.

Drove into work this morning and as soon as I go over 60mph I notice a loss in power and the car doesn't seem to accelerate with any power.. Seems lifeless and just edges higher slowly.

It could be something to do with fuel delivery...

 

Check the fuel filter, fuel relay, fuel pump, injectors. Probably start with the fuel filter as that's easiest

It could be something to do with fuel delivery...

 

Check the fuel filter, fuel relay, fuel pump, injectors. Probably start with the fuel filter as that's easiest

Thanks James, I will give that a go.

Forgot to add this:

 

Also, the engine emissions light came up on the dash board and the following codes came up when I scanned it:


00665

01025

00665 - Boost Pressure Regulation: Control Range Not Reached

 

Possible Causes:

 - Hoses/Pipes no fitted correctly, disconnected or leaking 

 - Charger Pressure Control defective 

 - Faulty turbo (hopefully you can ignore this one but you never know) 

 - Faulty Diverter Valve

 

 Possible fixes: 

 - Check all hoses and pipes are connected correctly

 - Check/replace/clean Charge Pressure Control 

 - Check Turbo again 

 - Check Diverter Valve 

 

00125 - Trigger for On Board Diagnostic Lamp; Malfunction