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sib

Member Since: 18 May 2007
Location: Baaath
Posts: 144

Strange noise when cruising at 70

My 2.2 90 makes a strange noise.....only when hot and only when the throttle hasn't been moved for a few minutes ie cruising at a steady ,otorway speed. It sounds like a quiet gritty whistle sound. As soon as I release the throttle a bit or increase foot pressure slightly it disappears until I haven't moved it again for a minute or so.
Any thoughts ? Is it some kind of gearbox whine ? Hard to tell where it's coming from due to all the other noise but sounds as if it could be rear of engine or front of transmission, at a guess...

Any thoughts ? Sib
Bath UK
1952 80 inch
1973 88 inch
2018 Morgan plus 4 narrow body

21st Oct 2013 7:03pm

Skye_Rover

Member Since: 30 Aug 2013
Location: Skye
Posts: 85

1998 Defender 110 300 Tdi CSW Cairns Blue

Regen mode kicking-in for the DPF? Would explain why it only occurs after a period of steady-state running on the motorway. Roads? Where we're going, we don't need roads.

25th Oct 2013 12:02am

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