Removing rear O2 sensor on 01-newer PCMs -- Things you should know

[Slick2500]

I just bought an 02 Emulator/Simulator from ZZP. From what the ZZP tech guys say you cant just use any o2 sim. It needs to have the correct resistor it in that our PCM likes so it will report back the right MV then letting the cat test to complete. I just got it so Ill pop it on and report back.

If you bothered to read this thread you would know that those do not work, your car will still dump fuel.

An 02 sim does not fix this problem. I know this because the car I had trouble with already had one on it that works fine and removing it made no changes and the condition actually lessoned with nothing in place

[Uno99]

If you bothered to read this thread you would know that those do not work, your car will still dump fuel.

Well good googley moogley Slick......I did read it a few time actually. I was simply trying to add what I was told by the ZZP rep. So sorry. I actually mentioned this thread and he assured me that this was an issue awhile back but their O2 sim would work. When I was on the fence he followed up the the the "it needs a specific resistor so the pcm sees the right mv" line which must be BS. He got me.

I popped the sim on today and only scanned for a bit. The 02 code is gone but as you all stated the test does not complete.