I have an Avalon Astoria 04-05 model and the original glow plug lasted close to 5 heating seasons before it needed to be replaced. I put an new one in myself last January/February and just last week 12/13/09 burned it out as well. I read something about a vacuum line in another post is there by chance one on this model and if you might know could you tell me what I am looking for if accessible. Do I have any other choices for a more durable ligniter. Have they improved them at all. I have checked what appears to be only one fuse on the circuit board and it doesn't look blown. any help would be great. thanks