Hi,

I had the Haldex and pump replaced with a reconditioned unit about 6 months ago because it wasn't working at all and I was getting the 'transmission fault - traction reduced' warning on the dash display. Ever since then the rear diff has been getting noisier and nosier - I assume because it wasn't connected before due to the broken haldex? Especially low speed manoeuvring, pulling away, or when at full lock. It also feels a bit jumpy/juddery. The fault on the display hasn't returned since however if I get the wheels to spin by putting my foot down on wet grass I can hear the Haldex pump kick in, it sounds like a compressor recharging, like it's trying to build pressure but can't? I was under the impression it should pressurise once to put power to the rear wheels and then depressurise again once it no longer detects wheel slip? Or should it be loudly pumping? Likely need a rebuild on the rear diff or replacement with a recon one?

Thanks

Check out Austen at Bell Engineering.co.uk He lives and breathes all things Haldex. I am sure other members will be along soon with the same or similar advice.

RobbieL1 wrote:

Hi,

I had the Haldex and pump replaced with a reconditioned unit about 6 months ago because it wasn't working at all and I was getting the 'transmission fault - traction reduced' warning on the dash display. Ever since then the rear diff has been getting noisier and nosier - I assume because it wasn't connected before due to the broken haldex? Especially low speed manoeuvring, pulling away, or when at full lock. It also feels a bit jumpy/juddery. The fault on the display hasn't returned since however if I get the wheels to spin by putting my foot down on wet grass I can hear the Haldex pump kick in, it sounds like a compressor recharging, like it's trying to build pressure but can't? I was under the impression it should pressurise once to put power to the rear wheels and then depressurise again once it no longer detects wheel slip? Or should it be loudly pumping? Likely need a rebuild on the rear diff or replacement with a recon one?

Thanks

Today I popped the fuse out for the haldex, had a drive about and all the symptoms have gone so suspect it is that, believe it's under warranty from where it was last replaced so will have to get that sorted after Christmas.

yep - seems like a Haldex issue.

Hope you get it sorted easily.

If you dont then Bell Engineering is the place I'd go to if I couldnt sort it myself. Jules