Went to start my 1999 Expedition last week and it would turn over forever, but wouldn't start. Had to have it towed to a shop and they replaced fuel pump for $531. Said they weren't getting any pressure reading at all. Went to take it home after this repair and wouldn't start again in their parking lot. So after they toyed around with it for another day they replaced the transponder and it has run fine since. Do these transponders just quit working, and if so would this have shut off the fuel system( including the fuel pump)? Did they just soak me with an unnecessary bill of $541?
The Expedition has roughly 150,000 miles
Any help would be appreciated.