I have a 97 Expediton with the 5.4 with 126k miles. For the past couple of weeks I have been having problems with it starting in the morning. It starts, then dies. This happens a fews times but eventually I can get it running. The theft light flashes rapidly when this happens. Once it has started, it runs great. My husband replaced the IAC yesterday and it did the same thing this morning, started and died. Any suggestions as to what to do now???