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BrettMRC



Member Since: 02 Jan 2024
Location: South West
Posts: 32
United Kingdom 
D250 - Seems noiser after wading
I went through around 30" of water yesterday, well within the vehicles capability, and did so at no more than 5mph.

Since then it's got a noticable noise coming from the engine bay, almost like diesel knock - but doesn't seem to increase or change with engine revs.

Everything is working as it should, no odd feelings or vibrations, no warning lights etc... it's just a bit noisier than it was.

I have a feeling it's done this before after wading and it seemed to go away of it's own accord.

Any thoughts? Smile
Post #1053005 26th Nov 2024 3:10pm
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lightning



Member Since: 23 Apr 2009
Location: High Peak, Derbyshire
Posts: 3216
United Kingdom 
How far have you driven since going through the deep water?
Post #1053025 26th Nov 2024 6:23pm
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BrettMRC



Member Since: 02 Jan 2024
Location: South West
Posts: 32
United Kingdom 
Probably 10 miles or so, mixed driving.
Post #1053026 26th Nov 2024 6:26pm
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Philm



Member Since: 19 Jun 2020
Location: Manchester
Posts: 182
United Kingdom 
Did you stop and rev the engine when you came out of the water to clear the exhaust?
Post #1053027 26th Nov 2024 6:32pm
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BrettMRC



Member Since: 02 Jan 2024
Location: South West
Posts: 32
United Kingdom 
Now you're asking.... probably didn't, no...
Post #1053032 26th Nov 2024 7:08pm
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BrettMRC



Member Since: 02 Jan 2024
Location: South West
Posts: 32
United Kingdom 
Quick update on this; it was nothing to do with the wading.

The noise was like the diesel knock you'd associate with an old diesel, over time it got worse and worse - most apparent when slowing to a halt at a give way & low speeds.

It was ultimately traced to the alternator pulley/bracket, this was replaced along with the alternator, (3rd one now) and cured it. (So the noise was most likely a dying bearing on the idler pulley).

We're now a few months on from this and I swear I just heard a snippet of the rattle again!

Will see how it develops.

Mad really, the cars literally just about to hit 30,000miles - not like it's been to the moon and back!
Post #1070341 26th Jun 2025 7:49am
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