[John-eh]

That's a pretty good request. But there are few people out there who understand the 2002 Focus. I changed an engine in mine once. Then when that dropped a valve seat 16 months later, I paid someone to drop in another used engine, because they didn't know how to change just the valve head. I hope you don't have the split port engine. Although a very good engine on gas, it can stop suddenly anywhere. Then ten minutes later, it will start again and off you go. Ha ha.
Yes, I'm still driving mine, for two reasons: 1) it's a stationwagaon 2) great on gas.
If I was you, I would purchase the Haynes repair manual, and always leave it on the passenger seat for when you take the car for maintenace or repairs.
I recently found out, you can't get real Ford parts for the 2002 anymore unless you call the parts storage business in U.S.
All the best.