Can you please give me any advice, I have a Fiat Palio Weekend, and every now and then when I put my key in and turn it on the Key light and code, stays on and when I try to start it up the engine cranks over but will not start, and I have to fiddle with the key in and out of the ignition for a few minutes to try and get the key light to go out an code, could this be an Imobiliser problem or is it my key or the ignition. Any help would be appreciated.

Ann