HI John, if you get a good auto spark he can by pass the immobiliser, these hdis give a heap of trouble, the ignition switch gives bother, they sometimes wont start, and some times wont switch off the engine, they give injector problems also, and the primary fuel pump which is in the tank fails often, I sold mine today thank god, never again, my altenator also failed, and in very wet conditions, the engine sucked in a lot of water and nearly wrecked the engine, anyway thats some of the faults that was in my year 2000 306 HDI, Good luck with yours.
Frank.
February 2009