my thoughts ditto ;;;;;another thought on my problem,,,i had a couple keys made at walmart that they said my original key had no chip===i checked the keys for fit and function,,all good ,,did not run the engine,,,later on i started the engine and be hold the immobiliser system kicked in and shut me down==didn't catch on at first and started to attact the fuel system and changed the fuel filter but stopped before moving on to a pump,,,checked for fire at the sparkplug wire and no fire===scared problem could be big and researched my actions and thought of the keys===put the original key in and purred like new money===now ,did i have the incompatible keys in when i tried to program the extra remote,,don't remember,,will try again with the true key and re post the results soon,,got fingers crossed===Thanks MX5 Guy,,,i couldn't agree with you more and thanks for the reply.....