Hi...I own a 2002 TD5 Defender 110,000m. I have a on going problem that develops when the car is put under load eg negotiating a long gradual hill where apon the car loses power & runs rough untill returning back to the flat where it returns to normal after a few miles ! I've taken into my...

Hi...I have a 2002 Defender TD5 (110,000 miles) Recently I started to suffer from loss of power/running rough/uneven when the engine had to work hard ( ascending steep hills etc) I took it in to my 4x4 mech ( mainly Land Rovers) Nothing registered on the dynostic's but discovered the air flow...