Verbalkint99

Ok, need some help pinpointing the cause of my engine light.

Its been on for a while and the codes have been in regards to the O2 sensors. Its a 2000 Sport, auto, with the non-Cali emissions (only 2 O2s).

It started with a really rough idle and acting like it was going to stall. During this time there was no throttle response at all. This went on for a little while and then the idle became very sporadic...jumping from 750 rpm to 1250. Finaly, the engine light came on and the engine began running fine again. After that each time the code got reset the same scenario would happen again.

Due to it having 180,000 miles on the stock Cat and sensors I crawled under and replaced everything from the header back (both O2s, cat, and muffler).

Reset the codes and off I went. Once the engine got up to operating temps, the same problems happened again.....rough idle that slowed way down acting like it wanted to stall, zero throttle response, then the light came back on and its been running just fine since....with the light on!

Took it up to Auto Zone for another scan and these are the codes they gave me:

P0132 - P0135 - P0138

Again, brand new O2 sensors and Cat, same codes as before the swap...any help would be greatly appreciated!

thanks