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D3 - Transmission Gearboxes, diffs, drive shafts. |
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#1
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Slight judder/vibration when reversing with full steering lock applied...
Is this normal on the D3?
When performing a 3-point turn, reversing under full steering lock produces a mild but noticeable vibration or judder. I've noticed it on both of the W12 cars I've test driven over the last few days. One being a 2005/55 car with 106000 miles, the other a 2005/05 car with 99000 miles. I've experienced similar, albeit far more pronounced, when manoeuvring a Mitsubishi L200 on dry tarmac having neglected to put the transfer box in 2wd. So i wonder if the milder effect in the A8s is just a quirk of the Quattro system? Or if both cars have had a fault which causes this. |
#2
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Sounds pretty much like quattro judder. You'll get it on full lock going forwards too
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2010 Jag XF 3.0D Portfolio S I know.. I know.. |
#3
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Quote:
Excellent, thanks Psyche. I didn't notice it going forwards so much in the car I drove today, although thinking back I it did a little when pulling away under full lock in the other car on Sat. So, it's just the way this Quattro gubbins works, that's a relief! It seems that all diffs are locked up to about 5mph according to a couple of webpages brought up by googling "Quattro judder". Just generates a bit of tyre scrub, much like that L200 although a good bit less pronounced! (Which must mean it ought to be just as good in snow/mud as that L200, then... ) |
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