Rough running

[A26B]

Originally Posted by Billy Mild

My o2's were replaced when I put the headers on late last year. The o2 sensors were "Standard Motor Products" brand from RockAuto. I did use a O2 extension harness on the passenger side header. I have the o2 extension harness wrapped in wire loom and DEI high temp reflective tape to help prevent it from melting.

So I should be looking at a leak possibly on the passenger side of the exhaust or maybe the O2 on the left side is lose maybe? I will try and jack up the car and see if there are exhaust leaks.

Check the plug connector on the passenger side O2 extension to insure there is no moisture. An O2 signal short will cause problems in closed loop only. In particular, if the elec connector is under the HVAC condensate drain, water can drip on the connector. (actual experience encountered on my ZR-1)