ive thrown the 0325 and the 0140 codes twice now which is the knock sensor and the oxygen sesor does anyone have any suggestions on what i should do.

 

Have you actually ever replaced any of the sensors that are being reported?

Replace the O2 sensor, reset the ECU and you should be good to go. Check the ECU again in the week to see if the knock sensor is being reported - it is a silent code - i.e. a knock sensor fault alone will NOT trip the CEL.

 

that was the only code that came up on my 99 today