I have a '99 Explorer XLT 6 cyl. SOHC. So my bank 2 is running to lean and my bank 1 has a "pending code" being too lean. According to my scan tool, my LTFT WAS about 10-15% (going up higher at idle) in both banks. Now, a couple days later, it's up to about 23% at idle in both banks and goes to...