Hi, got a Galaxy 56plate (2007) 2.0 tdci 140 bhp 151kmiles
Had a reconditioned turbo last year as my old one was like a police siren!.
Anyway i tow a caravan never had error codes before but since the new turbo i keep getting engine light after about an hour or so of towing driving.
Also getting a whistle noise on high boost but only when towing.
Scanning using forscan i get p003a and also (cant remember the exact code) turbo position circuit voltage too low/high.
I checked the EGR cleaned that and its all working can hear it moving when you turn the car off and no error codes.
The problem only occurs when towing..... putting more pressure on the the car.
Has anyone got a vacuum diagram so i can check the pipes are in correct order.
Also what voltage should the actuator position sensor show at idle full bost etc so i can check adjust on it.
I got a minivac tool so if someone has the correct actuator pressure i can test that. (its a vacuum/mechanical actuator not electronic)
Not sure what the whistling noise is? I've replaced the pipe coming from turbo to inter cooler and got new gaskets for the EGR.
I tried soapy water on the pipe from inter cooler to inlet cant see any bubble but might have to take the plunge and replace to eliminate that.
I've read about the EGR whistling being slightly stuck open but mine seems fine.
I can feel the boost almost pulsating about 1800-2000rpm then the error shows up.
The car goes into limp mode and a quick on/off resets it but does come back when towing. I'm assuming the ecu is going into limp as it does not like either the actuator position or boost pressure.
I've changed most of the sensors map,maf,crank,cam, both vacuum solenoids and actuator position sensor.
Had 2 services still no fix so far. All filters changed.
MPG has been quite good avg 50 normal, towing 30-38
Any ideas thanks in advance.