So far I've changed plugs, did a UIM/LIM cleaning. The gaskets looked like they had been leaking. I figured I had fixed it as the wife reported no CEL for almost a week. Then while driving up a relatively steep hill for a mile or so the CEL came back.
I've done some searhing and found where someone had suggested a faulty fuel pump. I will check the pressure tonight when I get home but I wandered if anyone else had any ideas? I had bought an O2 sensor but never installed it with the IM gaskets looking the way they did, I returned it. I am have doubts about 2 bad O2 sensors at the same time. I also hear a slight whine from what sounds like behind the rear seat area when you first start the car. Almost like a struggling fuel pump. I don't have a problem changing the pump. But I don't want to go through that hassle and find something else is causing it the trouble.
TIA,
Tim
