Hi,my laguna 1.9 dci estate 2003 has developed a surge of revs.When you accelerate quickly up through the gears the revs seem to surge really high before dropping really low and then eventually evening itself out.You can actually watch the rev counter going up and down then coming back up!!It has recently had a new oil intercooler from renault costing almost £800!!Its only when you accelerate hard through the gears and doesnt happen if you take it easy,any suggestions or advice greatly appreciated as i know very little about cars,thanks.

Dan., February 2009

Thanks a lot,what is this flange actually called in case i need it replaced or repaired?thanks again,Dan.

Dan., March 2009

ok dan may be on the wrong track here but in laymans terms remove the plastic engine cover from the top of the engine and at the back of the engine on the passenger side of the car you will see a flange bolted together with 3x bolts check that it is not leaking oil here if it is thats your fault

gtwannabe, March 2009