I was getting a p0134,p0138,p0139 code. I replaced the H02S11 and the H02S12 oxygen sensors with the Bosch replacements. The car seems to run a little better. I still have a miss fire when the car is in gear. But not in park or nuteral. And the check engine light is still on and the fuel economy and power is still poor. I have just pulled the battery cable to reset the ECM. But I am sure something is still wrong. Any ideas

 

O2 will not cause a misfire.

 

From what I read that the 02 sensors can make the car run bad and cause poor fuel economy. Any idea on a rough run but only in drive. Smooth in park or nuteral

 

I'm going to say MAF, but that's just a hypothesis.

Try cleaning it with MAF specific cleaner.

 

Misfire under load points to weak ignition. Check the coil packs.

 

Sorry but what is MAF cleaner?

 

Mass air flow.