RichardS

Yup - what Andrew said! The OEM sender unit is a common failure - and not cheap to buy - but if your gauge reads low and there's no obvious engine noise (knocking, rumbling etc.), then it's most likely just the sender that's failed!

Happy birthday for yesterday Chris - hope you had a great day mate!! Richard

Today, I swapped out my ABS ECU, inside the rear offside interior panel - only cost me £15 from Banzai Breakers and it does seem to have reduced the groaning sound somewhat. There's still some intermittent creaking noises coming from the ABS pump area, but they are much less frequent now. Whilst I had the rear seat out, I gave the whole interior a nice deep clean - including behind the interior panels - I also used a liberal quantity of Autoglym interior shampoo on the carpets and over-mats. They smell nice and fresh now Then I gave the leather another treatment with Gliptone conditioner......

And the rest - you can typically add 10 years to that.... But dead right; although on the previous occasions I had paint work done, I was luck that the sprayer did a bloody good job in matching the surrounding panels. They used some kind of colour analyser to get the paint mixed to match. However when I had the sills done I decided to go for a full respray - for the very reason that it would get harder and harder to match new paint to old.

Mine was near side rear - and sadly no experience of changing it.... Jimmer did the honours for me

Satin black is nice on a blue Zed IMO..... I had mine painted on - rather than sticky vinyl

Here you go.....

There is a test function you can perform. The ABS ECU is inside the off-side rear interior panel - essentially behind your seat-belt. Gently pull the trim away, you'll see the rectangle box - it has an LED which flashed to indicate the fault code. Give me a mo and I'll dig out the link Andrew sent me.....

Nice one Chris!!

Cheers Naz - Craig suggested that during our conversation on Sunday. I'm not 100% sure which side the furl pump is either - but the noise is definitely on the off-side.

That's what I thought it was last year - and then I got a replacement one, had it fitted, but still the noise persisted.... Granted, the replacement could be goosed as well but my local mechanic and I thought it unlikely. Thanks for the offer Dave; I do have another - and swapping them out should not be too difficult. Assuming you and me are both referring to this part.....

Yup - as above, I'm certain it's an electrical component. I also get the sound albeit only for a second, upon turning the ignition back on, just after a drive - so it's not exclusive to being in motion! It's not always continuous; after about 10 minutes driving, it's like a single, long "grooooooaaaaaaaan" and then nothing. It returns intermittently - but disappears immediately if I touch the brake mid-sound!

Looking good Naz…..

Good call Lee - better safe than sorry mate!

Yup - no issues with it.... Although I did wonder if that was the source of the noise; perhaps I'll disconnect the power, just to be sure! Good call Andrew; thanks!

I get you! My local garage is sadly closed at the moment - failing that, I'll get Julia to drive, whilst I crouch in the boot....

Cheers Naz - but it's definitely not the diff. It's 100% from inside the car - and definitely an electrical powered component in the boot. The noise often manifests itself briefly when just turning ignition on.

In my case, it's not constant - or dependent on speed/acceleration. Initially all's quiet, the suddenly, there's a gggrrrRRRROOOOAAAANNNnnnn - then it goes, then it returns. When I switch the ignition back on after a drive, there's occasionally a short ggrrRROANnnn from the ABS pump area - with the car stationery - before the engine fires up. And it's not constant during motion - sometimes no sound at all, for miles and miles, then it starts. And the second I touch the brake, it goes away!!

I thought it was - but now I'm not sure. I have a UK-spec car and still make use of the OEM amp - which is in exactly the same area as the ABS pump. I haven't ruled that out yet - but only because the groaning goes away when I press the brake

Nope - ABS light is off. It only came on whilst the wires to the pump were disconnected - but went out once everything was reconnected and I'd switched the ignition off, then back on.

Awesome - glad to hear that mate...

Soooo, on Saturday I decided to revisit my "alleged" groaning ABS pump - as per previous thread..... I have a spare pump, but before taking the plunge and swapping them out, I performed a few more tests - as the ECU diagnostic didn't reveal any faults. I swapped the relays - but the noise still persisted; I took the Zed out for many test-runs, Julia patiently sat in the back right seat, listening for where the noise may be coming from. We both concluded that it was probably from the pump - I had removed the plastic cover in the boot, just to be sure the groaning noise could be heard to the fullest. And then, I hit upon another idea - I removed the relays altogether. Naturally the ABS warning light came on, but still the groaning persisted. I then disconnected all the wires from the pump - thus (in theory) cutting all power to it - yet still the groan could be heard. What else could it be - can the pump really still make any noise, if fully disconnected? What else, electrical, in the rear off side would groan? When stationery, there is no such noise. The groaning can only be heard when driving at low-ish speeds; and it all but disappears when I press the brake - which makes me think it is still something in the brake/ABS system. Could it be the ABS ECU itself? Answers on a postcard, please....

Seconded...!!!

Nice work Gary - and the perfect opportunity to give everything a clean behind there!!

Nice work Lee....