How long does it take for a '93z take before it goes from open loop to closed loop?

 

As long as the O2s heat up, it shouldn't be more than a few minutes from a cold start.

 

Thanks! That makes me think my problem is the opti, not the O2's.

 

205 seconds, and the O2 sensors working, and the coolant temp above ~140*F. 93 O2 sensors (single-wire, unheated) may have a problem with heating up, if you have headers. Why not add a "signature" with basic info about your car, including any major mods?

 

I dont really have any major mods.

'93 Z28 M6, K&N CAI, MSD 6AL, 3.73, 1.6RRs, Underdrive crank pully.

I just dont know what to replace. I dont have the money to throw at the problem and both of those are fairly expensive to fix. It looks like I will be doing the repairs on my own.

 

What problem? I don't see any problem described anywhere in this thread.

Again... the idea is to add a "signature", so people don't have to ask if you have any mods. The more info you provide up front, the easier it is for people to help you.

 

Sorry, I didnt mention the problem Im having in this thread. I was just thinking out loud.

The problem was in this thread:
https://www.camaroz28.com/forums/sho...d.php?t=691122
After further research Im thinking opti.

The sig should be there now.