Ran without the wideband connected. Any damage?

[bmadd2402]

So I cleaned up some wiring in my bay, and forgot to plug back in the UEGO on my aem ems. Car was missing and sputtering all over the place. I thought it was just water in the coils again and drove it around a bit to try and dry them out. just wondering it I could have damaged anything.

[Cjmartz2k]

I don't understand. Wideband is completely independent of the way the engine runs. It just shows you what's going on--unless you you have it hooked up to a dataloggit and you are using some kind of auto tune.

Do you mean narrow band BTW?

[DrifterProdigy85]

No. I dont know how much is done to your engine but mines fairly stock and if i dont run the O2 sensor my AFR runs a tad rich at 13.5 @ cruising and gets richer the closer you get to boost. With the O2 connected it stays at 14.7 till you get into boost then it richens up. Itll foul plugs faster not running the O2 but shouldnt be a drastic difference unless tuning is way off.

[bmadd2402]

well, it is the uego on the aem ems, which is also the primary o2 sensor, and it is running in the boost comp mode(?) i think it is called, so I think it is shooting for specific AFRs. Don't know, but it was running like complete s***e without it, and since I caught it, it is back to normal.

[krayton]

no didnt do any damage.

[robbie2883]

if anything the aem went into failsafe and was prolly just running stupid rich...no damage

your aem is prolly tuned with a closed loop o2 reading off the wideband and that cause the tune to be off....aem never saw voltage and was adding fuel to try and get a reading

[240z4u]

Watch those readings, in the manual for my zeitronix it warns against driving with the o2 sensor unplugged because the heater doesn't work and it can become fouled.