Stock 92 5.0: Just quit running on the highway; sputtered once & died. Very low (1/8) tank reading. Added some fuel- thought guage might be bad. Cranks fine . will not fire...I can hear fuel pump prime upon turning ignition. Is it possible for fuel pump to prime without moving any gas (it is original) -or- I replaced an occassionally faulty TFI Ign. Modl (the thing which failed at high temps) about 4 months ago. It as an after market part. Possible total failure of the TFI, even after it cooled off?