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citroen zx avantage. 196 - rattle in rear of a citroen zx - bola

rattle, like hand clapping in and around rear wheel/axle when driving over a rough surface

citroen zx avantage. 196 - rattle in rear of a citroen zx - Bromptonaut

There's no axle I think the usual PSA trailing arms were used.

IIRC these had a little bit of passive rear steer - I'd suggest a thorough look at the bushings there and the bearings for the trailing arms.

citroen zx avantage. 196 - rattle in rear of a citroen zx - niggel
A number of years ago I had a ZX and I too had the same noise you describe. It turned out that two of the four rear subframe mounts had delaminated. They are designed to not fully separate but it is metal on metal. You might possibly notice using a pry bar but really need to take them off to see. I am pretty confident this is your noise
citroen zx avantage. 196 - rattle in rear of a citroen zx - boggles
I’m with niggel on this question. I too had the slapping noise on a ZX Avantage estate car.
Particularly rounding a corner with a washboard surface. I didn’t do it myself, a local Citroen independent correctly diagnosed the cause before confirming with a short road test.
All new rear subframe mounts were fitted and the car was once again quiet and handling properly.
citroen zx avantage. 196 - rattle in rear of a citroen zx - Andrew-T

Assuming this is the correct diagnosis, it may be an easy DiY. I replaced a pair of sandwich mounts on the rear subframe of my 205 a few years ago. The ZX was much like the 306, which is/was a slightly bigger 205 so you may need little more than a socket set and a jack or two. The bolts are below two plastic grommets in the boot floor.

Edited by Andrew-T on 16/03/2022 at 18:03

citroen zx avantage. 196 - rattle in rear of a citroen zx - bola

thanks guys for your comments/help. i will take them to my local garage and get the ZX sorted. i love this car, have it since 2002 and worth keeping.

citroen zx avantage. 196 - rattle in rear of a citroen zx - tobytronicstereophonic

The 'Rear Steer' feature on the ZX is provided by the flexing of the two rearmost subframe mountings' that allows the suspension beam to swing. I know, I too was disappointed when I was working at a Citroen dealership and found this out...

To be fair, the UK advert for the ZX did state something like "It's such a simple solution, it's a wonder nobody thought of it before".

However, the action of RWS must have been somewhat profound, because those mountings used to rotate after a few thousand miles by about ninety deg from their correct location. I recall this because you could book the time for replacing the mountings, rather than the loosening of two 16mm nuts and turning the mounts back to where they should be that the job actually entailled.

The replies so far have given good advice. I think the most likely outcome will be that the rear trailing arm bearings are failing. You can get your rear axle reconditioned by online companies that specialises in PSA torsion-bar axle assy. rebuilds. They collect your axle and return it in a recon, shotblasted and repainted near-new condition. All for under £200.

I have a mint 306 with a N/A XUD 1905cc engine. I inherited it from my sole remaining customer from when I had my own Peugeot/Citroen repair shop. He was 95 when he sadly passed away last year. I have worked on this car from new. At around 80k miles, we did a full recondition of the car. Every bit that was getting a little tired was changed. Back to new again!

So I can fully understand just why you don't want to scrap it. When you even have to go to the dealers to get a new battery 'coded' (yes you VAG! et al) and it must be bought from them (you need a Dealer-Omly QR code or things no longer work properly) it makes sense to run a car that can outlive its owner.

Edited by tobytronicstereophonic on 01/04/2022 at 00:45

citroen zx avantage. 196 - rattle in rear of a citroen zx - Xileno

Welcome to the forum and thanks for giving that interesting perspective, I always wondered how the RWS worked on the ZX compared to more complex solutions such such as on he Honda Prelude. Maybe in the case of the ZX it was a case of taking KISS a bit too far...