bobbyd

iTrader: (10)

what should be the normal readings on a o2 sensor?

i have a Aeroforce interceptor gauge and i was scanning both of my o2 sensors bank1 & bank2.

bank 2 (passenger side) i got readings of 445mv.

bank 1 (drivers side) i was getting readings all over the place anywhere from 75-8XX. it would jump from like 75 to 380 then to 775 then 452, etc just all over the place.

i replaced my passenger one yesterday with a denso. my drivers side one was replaced no more than 2 months ago with a corvette bosch one.

is that normal readings for the bosch? am i running lean / rich?

RPM WS6

iTrader: (3)

O2 values should move around some depending on what you're doing to the throttle at the time. The value should never be the same at steady criuse and WOT.

Are you saying that you logged a WOT run and saw values from .075 to .8xx, all while being at 4.0+ volts on the TPS?

bobbyd

iTrader: (10)

those were the readings that i was getting while i was driving to work this morning. speed was around 65-80.

the bosh one at a stop light would go down to about 100-150 or so. i cant recall if the passenger side one would go down or notfrom 445.

as for the volts on the tps im not sure what it was at since i didnt log/check that.

i will log the tps volts on my drive home.

what could be the cause for the o2 staying steady between 445-450?

jimmyblue

iTrader: (11)

They should be continuously switching in closed loop
(idle / part throttle) and show no consistent value.
The display rate is slower than the actual switching
and you will catch random values. The side with the
constant voltage is abnormal, probably faulted out
(sensor, heater or switching codes). That is where it
gets pinned, ~450mV, if it's got a fault (real, or imagined).

bobbyd

iTrader: (10)

i think i found the problem.

the aeroforce interceptor has 3 o2 sensor options. i had sb1 and sb2 selected so what i did was change the sb2 to sb3 and it started working scanning,

so im guessing the reason it was staying constant at 445 on sb2 is because i have to use sb1 for bank 1 and sb3 for bank 2.

bobbyd

iTrader: (10)

will it only reach 4.0 volts going WOT only? i didnt hit it much and only got up to 2.x volts