1994 Sidekick 16v AT 4x4 4dr virgin ECM Ruby's still there

[fixkick]

if the 02 sticks low on all these pre 96 cars it goes hugely rich, unlike most cars on earth. super rich, punishment mode then.
the heater must get 12vdc to it. that is first. at idle, or even key on. I think.
The smog brain inside want it hot as fast and as soon as possible. (so the 02 can wake up fast and soon)