It appears that my car is running on half its cylinders. When this first happened I was told to disconnect the catalytic sensors on the quarter panels, because when they fail they shut off half the fuel system. So I unplugged those and my power came back. I have since then changed those 2 sensors, and everything has been running fine. But this morning it was making a little more noise than usual when I started the car. Usually it makes a little rattling noise when I start the car in the morning than in about a minute or 2 it warms up and sounds great. This time it was a little longer than usual. Then when I started driving it, I could immediatly tell that it was not running right. So I pulled over and unplugged the sensors, thinking that they were bad. This time it didn't help. Still the same, missing and it seemed as if it was running on half cylinders. Any help, or any idea to point me in. Assides from the dealer.