what is the voltage range
03-16-2006, 03:44 PM
#11
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Originally Posted by Slows2k,Mar 16 2006, 02:21 PM
The primary 02 sensor's operation range is from 0-1 volt, flutcuating rapidly. That sensor output is normal and not a cause for a misfire. Startup output volts is usally in the 1.2-2v range, it can very. as long as it's fluctuating from 0-1V at idle you're fine.
03-16-2006, 03:45 PM
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Originally Posted by Wisconsin S2k,Mar 16 2006, 10:55 AM
I'll have to look at my helm manual to refresh my memory, but it can also be a bad ECU
thanks for your help
03-17-2006, 07:18 AM
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You have an 05 that's out of warranty? do you have that many miles already? lol
the ECU swapping thing would probably have to be done by a dealership, since you have to contend with the immobilizer
the ECU swapping thing would probably have to be done by a dealership, since you have to contend with the immobilizer
03-17-2006, 09:02 AM
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no , the 02 is giving trouble but i also have an 05. but can i use the ap2 ecu to check the on the ap1?
the service manual says to tape the keys together, IIRC, so the immobilizer recognizes the correct code. can i do that?
the service manual says to tape the keys together, IIRC, so the immobilizer recognizes the correct code. can i do that?
03-17-2006, 09:31 AM
#15
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Originally Posted by kent-k,Mar 17 2006, 12:02 PM
no , the 02 is giving trouble but i also have an 05. but can i use the ap2 ecu to check the on the ap1?
the service manual says to tape the keys together, IIRC, so the immobilizer recognizes the correct code. can i do that?
the service manual says to tape the keys together, IIRC, so the immobilizer recognizes the correct code. can i do that?
03-17-2006, 10:02 AM
#17
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As said, sensor is 0-1V and when on part throttle, idle or cruise it will bounce from lean to rich, at a rate depending on throttle pos. If you go into VTEC or put your foot flat (WOT) it should go near to 0.8v
Be unusual for one to fail so quick though.
How long has it been doing it? How many miles on the car?
MB
Be unusual for one to fail so quick though.
How long has it been doing it? How many miles on the car?
MB
03-18-2006, 01:00 AM
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That's normal for a narrow band O2 sensor. The range is 0 to 1 volt, but the ECU is
constantly adjusting A/F ratio, so it rarely will make it to 0 or 1 volt. .5 volt is theoretically
the stochiometric point (14.7). Too bad S2000's don't have wideband sensors.
Seems like the .035 volt is a bit low (lean). Does it go down below .1 every time
it fluctuates?
constantly adjusting A/F ratio, so it rarely will make it to 0 or 1 volt. .5 volt is theoretically
the stochiometric point (14.7). Too bad S2000's don't have wideband sensors.
Seems like the .035 volt is a bit low (lean). Does it go down below .1 every time
it fluctuates?
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