Power out on Freelander
I just want to say, I love my magazine and cannot wait when you go monthly. I have a 2005 Freelander Td4 with power issues. It seems to be fine from pull off but as soon as I reach 100km/h, it seems to lose power. Do I need to replace the turbo? I have done over 160 000km on the clock.
- Frederick Bouwer Ed – First check for split turbo hoses. A tell-tale sign for this is excessive smoke and a whistling noise. The Td4 has a variable nozzle turbo and is controlled by a boost solenoid (it is a black plastic unit close to the turbo). It applies a vacuum to the turbo via a small pipe. When the vacuum is applied, the turbo exhaust side vanes close, and it uses more exhaust gas to provide more boost. If the solenoid has failed it will constantly supply boost to the turbo, operating at maximum boost all the time. The ECU will sense this and at high speeds it will sense the overboost and cut the fuel in order to protect the system. Test the solenoid by pulling off the pipe to the turbo and if you have normal power at high speeds, then the solenoid is faulty. It is easy and cheap to replace. Good luck!