Range Rover td6 limp mode?

109inches said:

No oil on any of the joints. Engine side of intercooler and radiator covered in oil just wiped it clean to see if it returns. Variable vanes are free I can move the linkage freely. Is there anyway I can prove it’s working when it should do?

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The oil would be the next obvious thing. Proving the turbo won't be easy unless the shaft inside has an enormous amount of play.
The fact you have found oil is the best clue yet.
Any leak or crack in the turbo output to engine side will cause a boost condition. I had an oil film on my intercooler a while back. It turned out to be a hairline crack on a weld. I'd be watching that for recurrence. If there's nothing else in that area that can lose oil, you may be onto an answer.

Mark Piercy said:

The oil would be the next obvious thing. Proving the turbo won't be easy unless the shaft inside has an enormous amount of play.
The fact you have found oil is the best clue yet.
Any leak or crack in the turbo output to engine side will cause a boost condition. I had an oil film on my intercooler a while back. It turned out to be a hairline crack on a weld. I'd be watching that for recurrence. If there's nothing else in that area that can lose oil, you may be onto an answer.

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thanks for the help. Another question i have is I decided to double check the vac lines. On the pressure converter under the inlet manifold a previous owner has blanked the egr port. Just wondering which port is for what? One says vacuum and one port says out. Should the egr blank be on the out or vacuum?

109inches said:

thanks for the help. Another question i have is I decided to double check the vac lines. On the pressure converter under the inlet manifold a previous owner has blanked the egr port. Just wondering which port is for what? One says vacuum and one port says out. Should the egr blank be on the out or vacuum?

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Happy new year 109", you have a little plastic vacuum manifold underneath your engine manifold that sprouts vacuum pipes to various other vacuum actuators. I can't be 100% sure but you should find another actuator for swirl flaps if you have them and you can check how that one is connected?

In fact....

Mark Piercy said:

In fact.... View attachment 226628

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Happy new year. No swirl flaps ever fitted. Can’t seem to find a definitive answer on it.

If you look at the solenoid valves in the drawing, they all have the vacuum pipe fitted to the end and the feed pipe to the egr/swirl flaps and turbo fitted closest to the valve body. The pipe should be blocked on the pipe that leads to the egr.

Mark Piercy said:

If you look at the solenoid valves in the drawing, they all have the vacuum pipe fitted to the end and the feed pipe to the egr/swirl flaps and turbo fitted closest to the valve body. The pipe should be blocked on the pipe that leads to the egr.

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ok so I think I’ve been a bit stupid. If I’ve got my egr deleted and the pipe going to the egr is plugged then it won’t affect anything with what port it’s plugged in to?
The egr pressure converter can’t affect the boost pressure converter unless there’s a leak?

If it is a egr delete or false egr valve piece the pipe either connects to the false egr part or the pipe is plugged on the end so the vacuum circuit is not sucking air from the atmosphere. If it was circuit that had other vacuum pipes on it there will a loss of vacuum In the shared system.
Like the drawing above, that is a shared vacuum circuit. Any open ended pipes or damaged pipes on that circuit will cause an issue.