Can someone tell me which wire the oxygen sensor is on the ecu of a MY93 WRX? I've looked through previous threads and can't get a clear answer.

I think it might be Pin17 on block B135 (from Ravensdale website) but the wiring diagram I have from the workshop manual says it should be block B43 Pin 17.

Can anyone help?

pin 6 on B43

I think its the fifth wire across, as i think off hand, the first (pin 1) port doesnt have a wire in it.

Its white with silver stripes

This is what it is for my MY95 WRX..

Dan:D

[Edited by dhorwich - 5/17/2003 5:50:07 PM]

Thanks Dan.

Same colour for my 93wrx as well :) Fitted mine a few months ago with no probs

stupid question but is the lambada prope the 1st one off the turbo pipe or the second one?? just ive got a afr meter to put in on my94wrx and didnt know wot wires to splice.....

Hmm, everything fitted OK. I assume it is normal that nothing happens from cold whilst sitting on the drive? I think I read it somewhere, am I right?

yep.... sensor needs time to warm up... totally normal.

Dan:D

I am having trouble with my Dawes AFR as well, is it possible to tap into the Lambda sensor through a diagnostics port of some kind? If so where is it

I tapped into the loom just before the ecu as I was told this is the best place to put it (also keeps the connection dry). I also ran a separate earth feed directly to the battery as per the instuctions. The lambda on the early wrx's is the one in front of the drivers side front wheel I believe, the other one is the cat overtemp sensor (this is just what I've been told, never confirmed it yet though)

[Edited by Charlie H - 5/19/2003 5:50:19 PM]

cant get my dam thing to work!! wired it ok just reads rich all the time (even when hot) any ideas??

done it! it was the white wire with silver bands around it!! GOD I HATE WIRING!!