Running CIS on 80-83 3.0L w/o using brain/o2

GMR911 · 07-11-2002, 08:15 PM

Hi, Can any one give me info on running a 3.0 L without the brain/ oxigen sensor set up. What would be required to run this way and would it work properly. I am looking at installing a 3.0 L in my 77S and one mechanic said you could install it without the brain/02 setup or even use the complete CIS setup off my 77S on the 3.0 L. Any thoughts on this, Thanks

stlrj · 07-11-2002, 10:32 PM

I don't know about NY but here in CA it wouldn't smog.

Joe

Talonz82 · 07-12-2002, 02:37 AM

Hello, you can eliminate some of the circuits but not all, the ECU controls the frequency valve and if it does not work, the car will run, but very poorly, I can send you a electrical diagrahm if you need one.

I have a 80 3.0, I set the mixture with the O2 disconnected and leave it disconnect for overall driveability

Peter

Sean Hamilton · Sean Hamilton's Garage

email fellow member "Hladun".
you'll find him in member search under - H - page 5.
He's done some good tech articles on CIS mods.