Hi all, looking for a bit of input on this issue I have.

Fairly recently I swapped a 99 B18C2 (aus spec GSR basically) into my 93 EH9 VTI Sedan, utilising the stock obd2a ECU with an adaptor harness from speedfactory. I have a persistent code 23 which indicates an issue in the knock sensor circuit (rather than knock itself, from my understanding). Initially when I got the swap done I had run a small non shielded wire for the knock sensor and wired it totally wrong, which of course didn't work, and I spent a bit of time troubleshooting and testing continuity which involved plugging the knock sensor in and out a lot, and from memory I did put a fair bit of force on the (original) sensor as it's in an awkward spot. I then swapped out the wire for the original shielded knock sensor wiring from the 99 DC2 (that's our Aus spec GSR) chassis, and the problem went away entirely for probably at least a week, only to return again. I decided to replace the sensor, which fell apart when I took it out, with a new Intermotor brand one, but that did not help. This new sensor was sent to me in a little box in a bag with zero padding whatsoever, which to my understanding isn't a good idea with such a sensitive part.

Before I go buying another one, is there anything else it could possibly be? How likely even is it that the sensor was DOA?



Cheers in advance

 

Well, I just ordered yet another knock sensor, this time from a local store for about a third of what I paid for the last one as it was on clearance - paid $65AUD. Not bad. Figured it wasn't worth trying to return the other one. I'll report back with the result once it's installed, but input in the meantime would still be much appreciated.

 

Well, the new knock sensor did the trick. Thanks for coming to my TED talk.

 

cb