I have done a lot of research on here and I have found many threads and many suggestions and many different reasons for this to happen. Well it's happening to me and I can not fix it. I have taken it to 2 local shops now and they haven't been able to diagnos the problem. This has been going on since May 5th. I am sick of carpooling with my wife every day, ( not that I mind her company or driving her Hundy but I miss the independance of my own LC). The current mechanic working on it now thinks computer. Here is what we have done so far. I replaced the fusible link. It was cheap and worth a shot. The 2 mechanics traced wires from the fuel pump to the fuse box and every where between. I told them to specifically look behind the egr valve. One guy decided since he couldnt find anything he would eliminate the the whole wire from the fuse box to the firewall by just replacing the whole thing, (new wire from box to firewall). It now has a new relay, ( the one in the fuse box). I am desperate at this point and very frustrated. Who can help me?