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hello every one, found your web site very good hope i can get the info i need, im in liverpool, england, so my car will be called something different no doubt, i drive a ford galaxy 19 tdi, 2003 its the same engine as, golf,passat, tdi engine what i need to know
iv been getting limp mode, mostly after a long drive sometimes after 100 miles or more, it makes very little difference if i have 6 people in or if im on my own, i can go to 110 mph and it will just lose power and gradually only go 60-70 mph, but sometimes it will only be travelling around 70-80 mph and it loses power when this happens i can stop and turn the engine off and on and it will be fine again it resets itself. but it will happen again and again, i have been under the car and messed about with the actuator arm and found i could get about an inch and a half or so movement with my finger, i could feel resistance but it was not stuck at all, i sprayed it with loosening spray, i want to check remove the N75 valve i know its behind the heat shield at the back of the engine but.....
how the hell do i get it off? the valve or the shield any will do as i want to eliminate that if i can
also has any one had this problem and if so how did you fix it, thank you for any help in advance
 

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When you lose power at 110 mph I believe that it is going into limp mode and it forces you to slow down to 60-70 mph because that is the max speed that having (it feels like) 30 hp will allow. When you shut it off it resets it until you trip limp mode again.

Look through the FAQ articles for the tips on adjusting or replacing the VNT actuator. There are some instructions on troubleshooting the system. I don't know where your N75 valve is but if you follow the vacuum line from the VNT actuator it will lead to it. If you felt the actuator move freely by hand the more likely cause is a vacuum leak or broken vacuum line. Invest in a hand vacuum pump to test the vacuum line and actuator at the same time. n75 valves do go bad but I think it's probably less likely than the other causes.
 
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