maom79 wrote:
via De Barn wrote:


if AV 389 started roaring mid-journey then it was overheating. The 04s are notoriously bad for it
It wasn't even mid journey. It was just 5 minutes after it left the Palmerston terminus. Not overheating at all, must be a problem with the cooling fans. The 04s were very prone to overheating in their DMD days. But ever since they got LED's they calmed down big time.



Trust me, it was overheating! A few minutes is all it takes on a lot of them. If it started roaring as soon as the engine started then it would be a fan problem and that can happen often