DAVE-W

Ok....just read the autometer fitting instructions....switched live and good vehicle earth are easily achieved but I don't want to destroy a lambda sensor....so.....

My car is a 95 wrx so can anyone answer the following (based upon the fitting instructions):-

1/ Does it have a heated or non-heated lambda sensor?
2/ If it is heated, is it 3 or 4 wire and which wire do I connect the AFR to?
3/ If it is non-heated, is it 1 or 2 wire and which wire do I connect the AFR to?

Thanx in advance,

Dave

dhorwich

i do know that the o2 signal wire at the ECU for an MY95 WRX is as follows:



B43 pin 6..!

Dan

[Edited by dhorwich - 3/24/2003 7:04:05 PM]

DAVE-W

Thanx Dan.....however, not being of a mind to mess about with an ecu where would I connect it outside of the ecu?!?!?!?

I'm not planning on fitting my new gauges etc. until the weekend so you've all got just over 4 days

Now be good lads and off you go to find me that answer LOL

Please

Dave

dhorwich

I was exactly the same but decided from advice on here to fit it properly at the ECU, as there could be interferance from the engine on the gauge e.t.c.... You want the white wire (i think) at the o2 sensor.. you can tap into the wire at a much better place than the sensor itself. This is just under the coolant header tank where the three wires (i think) come up from the sensor and meet a connector.. The wire runs right next to the rocker cover on the left of the engine as you look at it..

Dan

[Edited by dhorwich - 3/24/2003 7:31:18 PM]

DAVE-W

Cheers Dan.....I was intending to trace the cables up through the engine bay to finf a better connection point than the sensor itself.....I think autometer actually state that in the instructions.

So....you think it's the white wire eh? I'm with you at the moment (not having any alternative ) .....can anyone else confirm this????

Dave

dhorwich

dave,

just had a trawl through my old posts from when i fitted my dawes AFR and the white wire is the signal wire..!!! there will be a red and black wire too..!!

Dan

DAVE-W

Nice one Dan....you're a top bloke

...judging by the time between our posts this evening you do however spend FAR too much time on here (damn....guess that applies to me as well ) LOL

Once again many thanx Dan....I might even get my new gadgets fitted before the weekend now

Dave

DAVE-W

One last quick thought....presumably the red and black from the Lambda sensor are Live and negative (or am I being far too presumptious??)....so I could connect ALL the cables from the AFR gauge to those??????

Dave (not REALLY confident in playing with Scooby engines )

Charlie H

Fitted mine to the white wire by the ecu as well (93wrx). Not too difficult plus it's got the added benefit of being protected from the elements. Not had any problems with it

dhorwich

Dave,

when i fitted mine i fitted the power and earth direct to the battery as far as i remember..

You sound just like my girlfriend... i.e spending to much time on scoobynet..!!

Dan

DAVE-W

White wire it is then

Think I'll take my live from the stereo as it should be a live switched by the ignition (otherwise the AFR gauge would have a constant live going to it )

Thanx for the help chaps

Dave

dhorwich

that would be right for your autometer one.... but the dawes one is different and didnt work at all until the sensor was totally warm.. could be wrong its been ages since i had that AFR, i know have a lambda link..!

Dan

DAVE-W

I considered a lambda link and knock link but ended up thinking that the AFR gauge was aesthetically more pleasing in the car as opposed to the little lambda link box.

Will prob still get a knock link though

Dave