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Bill, if it’s a one wire sensor, then just about any of
the "universal" 1 wire O2 sensors you find in your auto store will
work.
If multiwire (I.e. has a heater element and a
separate sensor ground wire), then you need to get one with the same number of
wires. If you get the same make O2 sensor, then the wires should be the
same color.
Bosch has a wire chart which tells you which color
wire is which - this may help. I always get a Bosch unit - they
might cost a few bucks more, but they are generally good quality, available
anywhere and you can find the wire color code. Here's the wiring color
code for the "Universal" Bosch unit.
Cable colour allocations for the
Universal Oxygen Sensor are as follows,
sensor output
signal wire = black, sensor heater element cables =
White ( Note - heater is not polarity
sensitive ) Sensor signal ground
( where used ) = Grey
Important: The cable allocations must
be assigned correctly. Otherwise
the Sensor could be
destroyed
Don't let them sell you a wide band O2 sensor which a
novice parts guy might try to do because they all have 5 -6 wires and might get
confused with a Narrow band O2 sensor with a heater.
Ed
Sent: Wednesday, September 29, 2010 9:10 AM
Subject: [FlyRotary] Auto tune/oxygen sensor
Was going to do some auto tune in the air
yesterday, to get to some regions of the performance map that can't be reached
on the ground.
Took off and the O2 sensor indication completely
disappeared from the EM-2 display. Did one circuit of the airport and
landed.
Discovered that the O2 sensor had failed
(physically -- the top fell off and separated from the body). This caused me to
raise the following questions.
1. I believe that the oxygen sensor readout is only
that, not used by the EC-2 for control purposes.
2. When in auto tune, is the EM-2 looking at the
sensor for indications of which way to adjust the mixture? If not, what is the
feedback mechanism?
I went to the Auto parts store for a replacement,
and ran into the problem that there are 100's of different oxygen sensors, and
they need to know what car it came from. Anyone have the specs on what this
sensor is?
Bill Schertz
KIS Cruiser
#4045
N343BS
Phase I testing
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