Does your engine have the 2v or 3v? Everyone in my household drives an expy, mine is a '99 2v 5.4 with 186,000 and runs like a dream with no issues. But my old lady's is an 03' with the 3v 5.4 and hers does the exact same thing at 160,000.. The 3 valve engines are VERY problematic, that being...