Hi, l have a Renualt Laguna Hatchback 2003.Ever since new i've had a problem with it.

When l change gear at speed of around 20-30, or slow down, or come to a complete stop, the rev is drop to below 1000 and it feels like the car is abot to stall but never does. It shoots back upto around 100 revs.l took the car back to renault a few times when under warrenty but they said it was just a feature of the car.

Do you know what the cause maybe? Any Ideas on cost to repair?

Also do you think l have a case to claim from Renualt as my warranty has run out? l have worksheets stating the problem when l returned it on 2004?

Any help or advice would be appreciated.
Its Petrol Engine, 1.6i

give us something to work on, like fuel type & engine size please