Well I've been getting code 44 which is lean condition and cars been running really lean and crappy.

I replaced the O2 sensor last night, no change. I've changed out EVERY sensor now under the hood exept for the MAP. I didnt think it could be the fuel pump since the car SOMETIMES runs really good.

So this morning before work I popped the hood and tooled around and followed the vacuum line off the MAP. The car was idling, but just barely, surging and hunting for an idle and running REALLY rough. I disconnected the vacuum line as it was running. The surging stopped and the car idled VERY smoothly, abeit just a little higher than normal.

I plug the vacuum line back in and it goes back to idle surging and running like crap....

Sound like my MAP sensor is shot?

 

ttftymf'ers!