1 Wire o2 sensor on 4 wire harness/ECU
12-25-2010, 07:46 AM
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Location: 1989 HF CRX
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1 Wire o2 sensor on 4 wire harness/ECU
I'm looking for the cheap/easy quick fix for right now, before I buy a new header and 4 wire sensor. I'm on the stock header for now, which has (2) 1 wire o2 sensors on the header.
I want to use the 1 wire sensor(s) for now, and my harness has a 4 wire plug, I want to make it work.
Seeing the 1 wire 02 is internally grounded, on the 4 wire I would just need to hook up the signal wire, and possibly join the 2 heater wires together with a resistor? and which o2 sensor do I use?
I believe there is a way to trick the heater circuit, after searching the internet for an hour and finding close to nothing except this....
How can I make this work? maybe someone has a link?
setup:
b16a odb0 engine
obd1 gsr harness
EG chassis arness
obd1 ECU
I want to use the 1 wire sensor(s) for now, and my harness has a 4 wire plug, I want to make it work.
Seeing the 1 wire 02 is internally grounded, on the 4 wire I would just need to hook up the signal wire, and possibly join the 2 heater wires together with a resistor? and which o2 sensor do I use?
I believe there is a way to trick the heater circuit, after searching the internet for an hour and finding close to nothing except this....
for the o2 sensor heater cel that your asking about, take a 1k ohm 1/8 watt ( at least 1/4 watt prefered)resistor (radioshack extreemly cheap) and either at the ecu or at the o2 plug connect the resistor to the 2 wires that go to the heater control ( one power and one ground). the resistor will let the ecu see a load and fool it to think the heater is good. This worked perfect in my car until I found out where to turn it off in the hondata editor.
setup:
b16a odb0 engine
obd1 gsr harness
EG chassis arness
obd1 ECU
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civicmatt
Honda Civic / Del Sol (1992 - 2000)
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06-22-2003 07:27 PM
