My check engine light on my 2000 Toyota 4Runner recently came on, and these were the codes that I found:

P0125 - Closed Loop Fuel Control Insufficient Coolant Temp
P1135 - Manufacturer Control. Fuel Air Metering

What would be the best way to attack these problems, and are they in any way related?

Furthermore, since the check engine light has been on, my car has not wanted to turnover at times, as well as stalled while stopped at stoplights.