stillfly45

iTrader: (-1)

I needed to replace my oxygen sensor on my 1JZ. So after several searches through multiple forums I came to the conclusion that 1JZ shares the same sensor as the 7MGTE and 93-95 2JZGE and 2JZGTE.

I wanted a new sensor so I went on Denso's website to look up part numbers. I found the part number for the 7M and ordered it.

It arrived today and I was shocked and disgusted to find that the Denso o2 sensor for the 7M is a 4 wire type while my 1JZ is a 3 wire type.




So to end all the myths. NO THE 1JZ IS NOT COMPATIBLE WITH EITHER THE 7MGTE or 2JZGE/TE! At least if your buying a Denso plug.

My question to the forums is can I rewire this 4 wire plug to fit my 3 wire connector?
Per the Denso FAQ the wiring is as such:
So based of that can I cut the 3 wire connector off and attach it to the two black and one blue wire from the new sensor? Then just ground the white wire separately to the chassis??

Or should I return the new sensor and buy a new one? If so can someone please give me the right part number!?

Ali SC3

iTrader: (10)

The old 3 wires do not have a separate ground, attatch the 3 old wires to the right 3 wires on the new sensor. there should be 2 heater wires and a signal wire. The 4th wire is a regular ground the newer 4 wire sensors have, just run it to a ground in the engine bay, it does not need to go to the ecu. that should keep the ecu happy and the new sensor working fine.