Whining Power Heater on 1HD-FTE (1 Viewer)

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Joined
Jan 12, 2025
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Location
United Kingdom
Hi all,

My 100 series has graced me with another new and concerning noise today.

It’s the 4.2l diesel. There is a very load whining noise coming from the power heater - sounds a lot like when an alternator is on the way out. I’ve attached the video link below.



Any ideas what is causing this? Can I fix the pump or does it just need replacing?

Thanks all
 

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