Resistance under turning

JustAnotherSaver

Got my car booked in soon but just wondering what this could be -

So some mornings I need to take a certain roundabout. To give a full picture in case there's anything that could play a factor - i hit this roundabout from a downwards slope. Once on the roundabout it's not such a severe slope but still would slope a bit as in my front end would be dipping down if you get me? In that direction.

Anyway i'm taking the 3rd exit and there's a bit on the roundabout just after I pass the first exit, I can only really describe it like driving over a cattle grid. Never had it on any car before and when I've driven my wifes car it doesn't happen to hers. It's clearly specific to my car.

This morning it happened there again and then again a touch further on as I take the right hand turn. Thing is though, it's like i'm being held back. This morning was quite bad when it made a weird noise for the 2nd time (hasn't happened before). Like someone has hooked a tow rope on me and is pulling me back.

I've tried the gym car park which is quite large, just keeping it on a right hand turn, but I can't replicate it. Maybe because I can't really do it at speed.

The other week I had a 170 mile motorway journey and at times when i was slightly (and i mean slightly) turning left and right as the road would naturally curve, I could hear an ever so slight droning sound. Steer straight again and it stops.

I had my front tyres changed in December for some Michelin Pilot Sport 4s. I was there when the guy was balancing them but hell fire does the steering wheel judder now at 70mph+ speeds. As for this droning sound on a turn and the cattle grid noise, I can't remember if that was there before the tyre changeover or not. It might've been but also maybe not. I'd like to say it was but I can't be 100% sure.

Sounding familiar to anyone?

Grumpy_chap

Have you checked all the tyre pressures?

JustAnotherSaver

I'm pretty anal about that so yeah, all 4 tyres are to exact spec.

aoleks

check your suspension, mainly the anti sway bar and bushings. something's not 100% there...

ciderboy2009

I had something similar to that on my Zafira - it turned out to be the Power Steering pump over-pressuring (although it wrecked 3 steering racks before they identified it - thankfully I wasn't charged for them).

venomx

Top mounts of the suspension perhaps ? 

JustAnotherSaver

I was wondering wheel bearing initially. 

Seems like I'm a mile off. 

Hopefully we get to the bottom of it this week and I'll post up what it was if he finds anything. 

facade

JustAnotherSaver said:

Anyway i'm taking the 3rd exit and there's a bit on the roundabout just after I pass the first exit, I can only really describe it like driving over a cattle grid. Never had it on any car before and when I've driven my wifes car it doesn't happen to hers. It's clearly specific to my car.

My guess is CV joint.

Goudy

Didn't you report one of your drive belt squealing last week?

If that's the PAS belt squealing and slipping you'll lose some assistance and the steering will judder (like a cattle grid), you will notice it more when the pump is under load, ie tight turns.

You might want to check the PAS pump for leaks or it spitting PAS fluid out of the cap (cavitation - air is getting in the system due to a leak).

I remember from my X Type days, the PAS pump on the 2.0 TDCi was prone to leaking, I had to replace mine at around 100k as it was leaking, it also juddered badly under load.

JustAnotherSaver

Funny that - as when I came back from a 340 mile round trip it squealed about 6 days out of 8 (days=1st thing in morning but not when leaving work) but it hasn't really done it since. No squealing at all last week or this. 

Its in tomorrow anyway and as the aux belt was last done 2016 on 90ish K and we're now on about 155k it's probably time. 

Steering only judders at motorway speeds, not less. 
This resistance or grinding or cattle grid noise only seems to happen on a right turn and then it's only on the same area on the same roundabout. Haven't replicated it elsewhere and also hasn't happened on a left turn (if I go motorway south then there's a fair old left bend - hasn't happened on it). 

lemondrops69

This resistance or grinding or cattle grid noise only seems to happen on a right turn and then it's only on the same area on the same roundabout. 

Road surface?