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Duncan wrote:Damage to the lower arm wouldn't likely cuse juddering, as Dave says. More likely pulling to one side or uneven tyre wear.
Even if the discs look good, they could be the problem. My Tourer had a little when I bought it. The rears looked ropey so replaced them, no change. Replaced the fronts as it was getting worse: instant cure. Were they OE discs, or a known brand?
Regarding the emissions.
Could be an intake air leak, worn plugs, faulty lambda probes, injector / fuel pressure problems. But not MAF as it has a MAP not a MAF, though this could and has been known to cause problems if contaminated with oil. Unlikely to be an exhaust leak as gas would get out, not air in. Do you know if it was rich or weak? If the system is detecting the problem it would normally adjust to correct. An Italian Tuneup may even help.
Duncan wrote: Unlikely to be an exhaust leak as gas would get out, not air in.
Bernard wrote:Duncan wrote: Unlikely to be an exhaust leak as gas would get out, not air in.
Air can be drawn in through a leaky exhaust, I have seen it firsthand more than once. I can only explain it by possibly venturi action dragging fresh air in and upsetting the lambda reading at the tail pipe.
Duncan wrote:Good news it's sorted.
A common problem when fitting discs, and I'm not saying this is what happened, is the mating surface of the hub isn't cleaned up. A couple of flakes of rust can cause it to be off slightly, and that can cause uneven wear leading to thick/thin problems.
Other problems can be slightly dragging pads that overheat and warp the disc, or a faulty disc that distorts once it's been hot and cold a few times.
MN190 wrote:Had EBC's on the front of mine with Green Pads fitted by Lates and within 18 months the front side passengers was juddering and the garage said it was warped.
I got a different make fitted now and its starting to judder again on the same side.
No run out when first fitted but definetly judder after about 12 months or so and only on the passengers side.
I was thinking of have the discs skimmed as its a bit excessive changing them every 18 months.
The first set of discs where on from new for around 5 years with no issues other than they had worn out.