Hi guys,
I am new here and my Defender 2006 bought new has had an easy life in Costa Rica.
It finally developed a fault—stalling after a start and lengthy waits before it would restart. Also a cough when underway accompanied by a big cloud of black smoke.
Blackbox Faultmate came up with : 9-5 turbocharger wastegate open load (logged) plus some stuff on EGR which is not fitted.
As it looked like a fuel feed issue I discovered a yellow relay under the righthand seat which is in the fuel pump circuit. There about 8 of the same relay in the vehicle. Switching it solved the problem, apparently intermittence in this component.
Saludos
Karl