Originally Posted by izzy08_03
The codes are Bank 1 lean and Bank 2 lean. Also when under acceleration in gear my vents will go to the default position (defrost). ....What am I missing for these codes?
Take a look at the plastic vac line running from the reservoir to the HVAC. These can melt against the exhaust or be leaking for any number of reasons.
If everything under the hood seems OK, I would check the HVAC vacuum controls under the dash. There are probably 3 vacuum servos and several vacuum lines. Any leak there could give you both of the symptoms - lean codes and defrost default.
What year is your Ranger? Which engine?