is the primary oxygen heater wiring differnt in an OBD2 engine and an OBD1 chasis harness?

i replced the o2 sensor.. and i still get the error and i know the new one works.

i have noticed the two black wires..... on the engine side it looks like one of them has a white line on it. could it be wired differently?

i'm running an obd1 p72 and evap/iab/vtec/knock are all wired correctly and functioning.


yes i searched.. from searching i found out that the heater is just to heat the sensor up so it functions ebfore really warming up... so shouldnt the stupid code just go away. grr.


thanks

 

What model of 94 hatch do you have?

 

si (4wire.. so it should be the same i would hope..)

 

i believe there the same i used my sohc wiring to do the swap b18c obd2... did you reset your ecu when you changed it?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by lazynok &raquo;</TD></TR><TR><TD CLASS="quote">si (4wire.. so it should be the same i would hope..)</TD></TR></TABLE>

Yes both the GSR and Si use a 4 wire O2. Even in the OBD2 harness, the O2 wiring is the same so it will be plug and play on a 4 wire O2 chassis. If you've replaced the sensor and reset the ECU but it still gives the you a CEL, it's gotta be a wiring problem somewhere.