JayTwo Member 9 Member For: 12y 13d Gender: Male Posted 16/01/13 12:01 PM Share Posted 16/01/13 12:01 PM Pretty simple little question for you guys.Me and a mate installed an Autometer Cobalt A/F gauge in my BA mk1 xr6t last weekend (yes, I know they are just pretty little disco lights for the dash) but the gauge always reads full lean. Either off throttle, light application or WOT shows full lean with a very very slight movement towards stoich on WOT (by this I mean 2 of the yellow lights very dimly light up). We wired power direct to the AUX power coming from the cigarette lighter with a 5A inline fuse and connected the sender wire to the grey wire coming off the stock O2 sensor.From some preliminary research I've done, this fault could be caused by a dead O2 sensor, the car has just clicked over the 100,000 on the clock and was only ever owned by "little old ladies" not rampant hoons like me and you. Can anyone shed any light on this?Thanks in advance. Link to comment Share on other sites More sharing options...
JETURBO ...JD TUNING ADELAIDE... Gold Donating Members 23,708 Member For: 16y 7m 1d Gender: Male Location: Adelaide Posted 16/01/13 11:49 PM Share Posted 16/01/13 11:49 PM How does the car idle ?How is it on fuel? Link to comment Share on other sites More sharing options...
Buf-Phoon loitering with intent Lifetime Members 13,318 Member For: 21y 4m 13d Gender: Male Location: Zombie Birdhouse Posted 16/01/13 11:57 PM Share Posted 16/01/13 11:57 PM Is the engine warning light on , usually comes on if 02 sensor is farked.When in doubt, get it on the dyno Link to comment Share on other sites More sharing options...
ratter Member 6,793 Member For: 18y 7m 5d Gender: Male Location: @ my laptop Posted 17/01/13 12:01 AM Share Posted 17/01/13 12:01 AM not all o2 sensor fault result in a warning light, the o2 may be working fine and actually reporting what is going on, did you solder the wire on the signal wire? Link to comment Share on other sites More sharing options...
turbotrana Member 2,586 Member For: 21y 9m 1d Gender: Male Posted 17/01/13 12:19 AM Share Posted 17/01/13 12:19 AM Don't waste your time. There is no meaningful info from those disco lights Link to comment Share on other sites More sharing options...
Mr_4.0 Member 1,096 Member For: 13y 11m 13d Posted 17/01/13 02:25 AM Share Posted 17/01/13 02:25 AM Installing a gauge on a narrowband o2 sensor can atleast let you know when your 02 sensor is working. Also let's know that your car is going from closed loop to open loop and back again as per normal operation. So not useless turbotrana. Link to comment Share on other sites More sharing options...
JayTwo Member 9 Member For: 12y 13d Gender: Male Posted 17/01/13 05:02 AM Author Share Posted 17/01/13 05:02 AM How does the car idle ?How is it on fuel?Idle is fine, however feels underpowered and misses occasionally when cold (replacing spark plugs tonight to see if that makes a difference). Fuel wise, she's pretty thirsty. I get roughly 300km to a full tank of 98, however I don't have the lightest of feet.Is the engine warning light on , usually comes on if 02 sensor is farked.When in doubt, get it on the dynoNo warning light at all.not all o2 sensor fault result in a warning light, the o2 may be working fine and actually reporting what is going on, did you solder the wire on the signal wire?Yep, soldered the signal wire onto the grey wire from the o2 sensor from within the engine bay then ran through a grommet to the cabin. Wanted to do it from the ECU but couldn't find an ECU pinout diagram for the life of me.Don't waste your time. There is no meaningful info from those disco lightsI am aware of this, however the gauges were provided free of charge on permanent loan from a mate so beggars can't be choosers I guess :D Link to comment Share on other sites More sharing options...
JETURBO ...JD TUNING ADELAIDE... Gold Donating Members 23,708 Member For: 16y 7m 1d Gender: Male Location: Adelaide Posted 17/01/13 05:06 AM Share Posted 17/01/13 05:06 AM Sounds like it may be shagged Replace the o2 anyway cheap and should make a touch better economy Link to comment Share on other sites More sharing options...
Ralph Wiggum Moar Powar Babeh Lifetime Members 19,323 Member For: 19y 3m 9d Gender: Male Location: Perth Posted 17/01/13 05:21 AM Share Posted 17/01/13 05:21 AM Yep, soldered the signal wire onto the grey wire from the o2 sensor from within the engine bay then ran through a grommet to the cabin. Wanted to do it from the ECU but couldn't find an ECU pinout diagram for the life of me. Link to comment Share on other sites More sharing options...
ratter Member 6,793 Member For: 18y 7m 5d Gender: Male Location: @ my laptop Posted 17/01/13 05:30 AM Share Posted 17/01/13 05:30 AM do not solder onto the signal wire between the o2 and the first connector when you get a new sensor otherwise you will kill that one also, ok to solder the other side of the plug though Link to comment Share on other sites More sharing options...
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