99 V70 Engine idling badly 10-15 min after starting
 

Hello,

This just started happening..Started driving, everything normal, after about 10-15 min driving, when I try to press the gas pedal, the car barely moves. Pull over, and it's idling really badly, misfiring, and the check engine light comes on. Turn off the engine, wait a few minutes, start again and everything is normal again. Start driving and again, after just a few miles the misfiring happens again. I thought it was the MAF, I unplug the cable, check engine light came on, which is normal, drove it a fem more miles, with same symptoms. What could be the problem?