Is it possible to fit a rear diff incorrectly?

Is it possible for a garage to fit a rear diff incorrectly? Our Land Rover Freelander (1997) went in a couple of months ago and has not been the same since. We get a hollow rasping sound when the car runs and vibration when over 45mph. The front steering also seems light.

Asked on 21 February 2015 by martin736

Answered by Honest John
Yes. Was the replacement diff new or 2nd hand? The noises and vibration it's making read to me that either it or the tyres on the back axle are not matching the fronts. Maybe the replacement diff ratio is slightly wrong. Don't keep driving it like that or you'll have trouble with the centre diff.
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