Its still a clutch problem as its not fully disengaging - normally due to dust and rust on the gearbox spline that passes through the clutch plates. The only real cure is to have the clutch removed and inspected (at considerable expense). However, if you wait a second or two before engaging reverse it could help.
John
April 2009
I can answer this question...
how can I fix my renault lagunar rt sport 1948cc gears crunching?
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