today i installed a obd0 to obd1 conversion harness. i wired up vtec and knock. i dont have a IAB or a O2 sensor so those were not wired in. with my obd0 ecu before the conversion no codes were being thrown. now i put that in and my ecu and its now throwing codes 8 and 20. TDC and ELD. anyone know why? any help is greatly appreciated. thanks

 

So your using a 0bd0 ECU when you want to switch to obd1? Wouldn't that be the issue because you just jumped to obd1 so your dizzy and ECU need to be obd1. Maybe I'm confused but this seems like the answer

 

whats the difference in obd0 and obd1 distributors? besides plugs? but im using a obd1 ecu now.

 

If you are using an OBD1 ecu, then you need the OBD1/2 distributor. The only exception to this rule is if you are running a standalone engine management system with the capability to change the trigger wheel pickup(e.i...AEM)

 

just buy obd1 dizzy and obd1 4 wire o2 sensor

 

buying the dizzy i can do. but my header doesnt even have a bung for a O2 sensor. so really no reason in gettin one right? but thanks for the help guys i really appreciate it