Here’s a video of a chaps 5.0 ticking in exactly the same way as mine. Before looking at the comments I had a feeling I knew what it was but I thought I’d get a 3rd opinion here.



What are your thoughts? 2019 5.0 SC SVA (Current)
2012 5.0 SC AB. Sadly written off by a campervan
23 plate Focus ST (Current)
1942 VEP Ford GPW Jeep (Willys) (Current)
1943 Whites M16 Halftrack (Current)
16 plate Eurofighter Typhoon, 2 x Eurojet engines with 20,000lbs thrust each. 1380mph

Sounds too slow to be engine/ supercharger, air con pump clutch maybe?
Be interested in your thoughts, conclusion.

My money's on the viscous fan coupling. Sometimes comes and goes for no logical reason. MY2006 / 2.7TDV6 HSE / CAIRNS BLUE

Yep, I’m thinking fan coupling, it comes and goes with no logic to it. It’s that regular that I find myself ticking with it. 2019 5.0 SC SVA (Current)
2012 5.0 SC AB. Sadly written off by a campervan
23 plate Focus ST (Current)
1942 VEP Ford GPW Jeep (Willys) (Current)
1943 Whites M16 Halftrack (Current)
16 plate Eurofighter Typhoon, 2 x Eurojet engines with 20,000lbs thrust each. 1380mph

Yep, definitely the viscous fan. It's a common one.

There's no point in changing it unless you really want to. Functionally, it will still continue to work for years afterwards. Kev

MY2014 L405 RR Vogue SE 4.4 SDV8 in Corris Grey
MY2010 L320 RRS HSE 3.0 TDV6 in Stornoway Grey