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R32 R33 O2 sensor readings

awurth

By awurth,
in Engines & Forced Induction

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awurth

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I have recently done the high mount upgrade on the 33 GTR but not thinking about we used a set of 32 GTR O2 sensors (I steel wheeled 32 GTR turbos) Since then the 33 has been running a bit rich and in my pursuit of finding the problem I have used my multi meter and read the resistance across the O2 sensors. on the 33 one's i get 4.3 ohms across two of the three termnials. My engine is dead cold and the 32 one's that are on it read 7 ohm's. Are these correct reading's do 32's use a different sensor cause externally they are different. if so it would read different on the computer and it would adjust itself to suit, making the car run rich??? cheers for any help

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RB30-POWER Mentor

RB30-POWER

Posted
Posted

You can't test O2 sensors by measuring the internal resistance.

They are both 0-1V sensors (narrow band)

So provided they both have the same plugs and wiring pinouts, they will work fine.

The newer O2 sensors will provide a faster sample rate during closed loop operation, therfore getting maximum economy. If you know which ones have done lower km's use those ones.

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