O2 signal quality question (logs included)
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O2 signal quality question (logs included)
Is this typical for an o2 signal or is it somewhat jagged. It is a heated 3 wire delco in the factory manifold location.
Here is a CSV log.
http://home.houston.rr.com/lisfamily/7-10-05%20log.csv
Here is a CSV log.
http://home.houston.rr.com/lisfamily/7-10-05%20log.csv
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Same
Looks like all the logs I have.
Its such a low level signal that any grounding issues with the ECM or even ignition noise can make it look like that.
I don't believe its anything to worry about.
Its such a low level signal that any grounding issues with the ECM or even ignition noise can make it look like that.
I don't believe its anything to worry about.
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Engine: 305 TPI(427SB in progress) 730 $8D
Transmission: THM350 (Getting a 4L80E soon)
Axle/Gears: 10 Bolt w/ 2.43 gears :(
I thought it was a grounding issue due to the fact the signal only drops into the upper 100's during decel fuel-cut while the wb reads free air o2 levels.
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Re: O2 signal quality question (logs included)
[QUOTE]Originally posted by eric305TPI
[B]Is this typical for an o2 signal or is it somewhat jagged. It is a heated 3 wire delco in the factory manifold location.
[QUOTE]
Normal.
The sampling rate of the scanner is much slower then the number of pulses going past it, so it's almost random as far as *where* in the pulse your reading.
On a good scope, and under the right conditions, you can see each cylinder firing, with a WB.
[B]Is this typical for an o2 signal or is it somewhat jagged. It is a heated 3 wire delco in the factory manifold location.
[QUOTE]
Normal.
The sampling rate of the scanner is much slower then the number of pulses going past it, so it's almost random as far as *where* in the pulse your reading.
On a good scope, and under the right conditions, you can see each cylinder firing, with a WB.
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