My gaffer has a 3 year old Focus diesel,which has developed a fault with a valve in the inlet manifold.(Or so Ford say.)
Has anyone else had a similar problem with their's,insofar as the revs/power die at about 80mph,and what was the outcome?
Sadly,because it has got 65k on the clock,it's out of warranty.
Ken.
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IIRC there was a similar problem with the Mondeo diesel. if the valve was rattling the solution was to block a vacuum pipe that operated the valve. The valve was for varying the inlet manifold pressure to improve flow. It sounds like your gaffer's may not be operating, check the pipe for damage/splits.
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