Renault V6 aircon noise

Post your Cit/Peu/Ren air conditioning queries or advice.

Moderator: RichardW

Post Reply
rmunns
Posts: 611
Joined: 09 Jul 2009, 22:09
Location: Southern Dordogne, France
My Cars: 2019 C5 Aircross 2litre diesel, auto.
2018 C4 Pic2 Spacetourer auto. Seems nice so far.
2019 C4 Cactus manual. Didn't like it, lots of niggling points. sold.
2011 C4 Picasso excl. - shaping up to be a disaster, bought June 2019. P/X'd
2009 Citroen C5 X7 exclusive, auto, LHD, 207500km (129000miles) now sold
Citroen Xsara Picasso excl. 2004 2.0 Hdi, RHD, 64000miles. (sold)
Citroen C3 Picasso excl. 2016. sold.
Two Xantias, one petrol, one diesel. sold.

In the past: Renault 16 (in about 1977, for a year). With front pass. seat out transported full bathroom suite from Cambridge to Derby!)
Renault 4TL (in 2011, for a year)
x 9

Renault V6 aircon noise

Post by rmunns »

My neighbour here (in France) has a Renault Laguna V6. He came to me for help the source of a noise that had just started. To me it sounded like a timing chain, if, that is, it has a chain and not a belt. But then Chris, the (english) neighbour, switched on the aircon and the noise got a lot worse. I didn't ask whether the aircon actually worked, but it seemed to me that whatever the problem was, it was likely aircon-related rather than timing chain/belt.
Maybe a stuck adjuster, which carries more load when the aircon is 'on'?
Could someone please help?
User avatar
xantia_v6
Forum Admin Team
Posts: 9053
Joined: 09 Nov 2005, 22:03
Location: France or NewZealand
Lexia Available: Yes
My Cars: -
1997 Citroen Xantia V6 (France)
1999 Citroen XM V6 ES9 (France)
2011 Peugeot 308 CC THP 155 (NZ)
1975 Jaguar XJ-S pre-HE (NZ)
x 825

Re: Renault V6 aircon noise

Post by xantia_v6 »

My first guess is the compressor clutch or its freewheel bearing.

Or maybe a delaminating dual-mass crankshaft pulley.
Post Reply