The checkengine light on my wife's explorer stays on. I have a code reader and have tried to figure out exactly why it stays on. I have even cleared it but it keeps lighting back up. I haven't really noticed a difference in performance, even on long trips.
02 EDGE; 3 liter V-6; Homemade Bucket Seats; Explorer Center Console; 120,000 + miles
"I once was obsessed with a clean windshield, now I just pray for rain."