95 v6 3.8 5 speed lost a lot of power and acceleration pulled codes and I have a bad 02 sensor misfire on bank one and Maybe a vacuum leak if I remember correctly but I just replaced the plugs and wires and it's still running bad also it rattles when I crank it up and sometimes at idle. I want my car back! Could it be the o2 sensor or fuel pump maybe?
Usualy a dirty IDLE AIR CONTROL VAVLE will do this. Take $20 to any quicky lube and have them clean it up, along with your THROTTLE BODY! GOOD LUCK!!
I seen this happen before and it would have a bad fuel injector that caused it to misfire.
02 sensor will not cause a misfire, 02 sensor can cause car to burn rich or lean thats it, but most likely you have a bad plug or plug wire. It happens from time to time so pull the plug wires off one at a time. Here is the bet thing to do, while the engine is cold pull the plug wires so that you can move them on or off of the plug then start the engine and use a spark plug wire holder to move the boot off of the spark plug on each plug on the #1 bank when you find the plug that does not change how the motor runs you have found the cylinder thats mis fireing now once you find the right cylinder replace the plug then the wire, if you have two cylinders misfiring then you have crossed two wires going to the plugs and will need to find out which two you crossed. The 02 sensor would show as not working cause you have to cylinders not firring and the 02 sensor can't adjust the computer to lean out the fuel enough so it throws a code for the 02 sensor. Hope this helps and good luck.
