1997 Expedition

Hoping someone can help me here. I'm getting a 1997 Ford Expedition in mid April. I'm basically getting it because what I have now is
about to collapse in the middle of the road at any minute & I have a new baby & a lot of pets to transport, so the room it will provide is a plus. The mileage is a little over 100,000. The oil has been changed regularly at 3,000 miles. Apparently the fuel injector has had to be replaced twice. Is this a continuing problem in this model or just normal wear & tear? It's an Eddie Bauer & has all the features except a sun roof which has bummed my son out to no end. lol It's in great condition inside & out, but since I don't know much about this particular model I thought I should ask others who might. I had a '94 Escort wagon for about ten years until I got divorced & never had a problem with it except for when the serpentine? belt broke. That was fun! lol Any advice or what to look out for would be appreciated! Thank you!
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