Having had my vectra 3.2 gsi for 6 weeks and the garage having it 5 of them replacing cambelt waterpump etc and then dicovering blown head gasket and costing over 1600 to fix now when i floor the throttle the spanner on the dash comes on and stays on untill you come to a stop eg at a t junction then it goes off untill you floor it again
ANY IDEARS PLEASE ?????????