96-up Knock Sensor - Who has one sitting around?

[RobertISaar]

i need someone to test the circuit resistance of the OBD2 knock sensors, i've READ that they're 100K ohm units, i need to confirm this though.

[gpchris]

Yup it's showing up at 100K on mine.

[RobertISaar]

appreciate it.

 

confirms a few things for me, mostly that to use an OBD2 knock sensor with OBD1, you would need to install a ~4050ohm resistor in parallel to the knock sensor and it will act normally.

 

in reverse, to use an OBD1 sensor in an OBD2 application, you would just need to install a ~96.1K ohm resistor in series with the sensor.

 

 

 

those changes would allow a full sensitivity knock sensor in either application.

[BXX]

appreciate it.

 

confirms a few things for me, mostly that to use an OBD2 knock sensor with OBD1, you would need to install a ~4050ohm resistor in parallel to the knock sensor and it will act normally.

 

in reverse, to use an OBD1 sensor in an OBD2 application, you would just need to install a ~96.1K ohm resistor in series with the sensor.

 

 

 

those changes would allow a full sensitivity knock sensor in either application.

 

Installing the proper knock sensor is easier than messing with resistors:lol:

[RobertISaar]

true, and generally there is an equivalent sensor for both styles, but eventually i'm looking for info so it will be possible to string more than one knock sensor into the knock sensor channels of PCMs, regardless of OBD1/OBD2/etc.

 

mainly, i wanted to confirm that the newer systems use 100K sensors.

[gpchris]

Its interesting to know. I always assumed they were the same.