Hey guys I'm wondering if anyone else has had this problem.readiness monitors for evap, catalyst, o2 sensor, o2 sensor heater.will not check in I've ran it through the obd2 drive patterns more times than I can count. Up on jack stands and on the road.

I've triple checked my wiring and I can find nothing that I did wrong. I have also done hours of searching on yotatech and other forums and can find no one with the same problem. I'm at a total loss here any help would be much appreciated. recipient is a 94 4 runner originally a/t. Donor is 2000 Tacoma M/t California emissions

 

It is not throwing any codes. Mil is off and everything works flawlessly

 

Are you trying to pass the ref?

I used 3.4 from 95/96 T100 auto with 3 wires TPS and ended up declaring it as 95 so I don't have to worry about ready/not ready business. I still use original charcoal canister. It does cost more for me to pass smog though.

You wired the ECU speed input from the speedometer, right?

 

Ya going thru the ref all the monitors have to check in.
Speedo's all wired up and working. Its off by a couple mph do to my 33s. But other than that its fine.