Quote:
Originally Posted by Tannaton
The haldex is driven by the propshaft which is permanently "live".
Noises like this are difficult to diagnose, but I would also suggest removing the prop is the first place to start as if you can do that yourself, it costs nothing.
I had a similar noise once on my 2003 D5 XC90 which was the propshaft front joint. It got especially worse when the torque converter locked around 55 mph.
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I was thinking more of:
The prop shaft is driven live and so is the haldex unit but only the front end, when you apply throttle the haldex then locks to convert to awd?
Think you guys might be right to remove prop first..