AEM Says Rich, o2 Sensor Is white..

YouGotSpooled

New Member
Aug 3, 2006
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Saskatoon, Sk. Canada
Alright.. When I was boosting (dead battery) the car awhile back, on my AEM the plastic melted on the back by one of the connectors. So I bought a new connector and new pins and hooked it back up. Sometimes it will stay stuck at 14.8 and wont move at all. Sometimes the light will get dim, then brighter, then dim and so on. Maybe the gauge is Fubar?

This is what my gauge reads, when it works which is most of the time.. At idle when its cold it runs a bit richer 13-14.. At operating temp the AFR is usually between 14-16. When Im crusing at around 2500rpm its usually right between 14-15. When I give it a little throttle it will go down to 13-13.5 but everytime I go WOT it goes straight down to 10. It doesnt matter if the boost is turned up or down, it always goes to 10 at WOT.

I checked my o2 sensor and it was white.. Im thinking oh shit.. So I checked my spark plugs, but they all look normal. So currently I have it running off the wastegate at the stock 6-7 psi. Im also have a problem holding consistant boost all the time with my AVC-R. Sometimes it will hold steady where I want it, then a run later it will be running 3-4 psi lower. Then magically it will go back to where I had it.

Mods: Lex AFM, Rc550's, Stock Pump, Stock fuel pressure, full 3" exhaust, stock ct-26. I also have a NEO but nothing on it has been touched.

Help very much appreciated.
 

Fletch124

2jz swapped!
Jul 17, 2005
1,282
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Reno, Nevada
The white on the 02 sensor is because its really close to the turbo, you ruined the sensor because the EGTs are too hot for the sensor to handle.
 

Fletch124

2jz swapped!
Jul 17, 2005
1,282
0
0
Reno, Nevada
YouGotSpooled;1043863 said:
Its the factory o2 sensor Im talking about that is white. Your saying I ruined my stock o2 sensor?

The AEM sensor is near the end of the downpipe.

Oh i thought you were talking about your wideband. Ohh I have no idea then. I just moved my wideband sensor farther down the stream and there was a little bit of white on the wideband and 02.