*URGENT* Hovering RPM's

Diskowon said:

I have the same problem. The code its throwing on mine is for a primary o2 sensor malfunction. It used to throw a code for innsufficent egr flow. I cleaned my throttle body egr runner and iacv now its the o2 sensor thats bad. Is your ride throwin any codes?

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J30MAN said:

This is the O2 sensor from the Catalytic Converter

And this is the O2 sensor from the downpipe

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1NonlyAccord said:

take the IACV off and clean it and try again.also clean the throttle body-the throttle position sensor maybe wearing out like mine is.Replacing it soon hopefully that fixes mine.

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001Stunna said:

you wont be able to tell much looking at them...you best way to test them would be to test them for the voltages they output when on the car.

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J30MAN said:

What kind of readings would I be looking for?

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001Stunna said:

Well the front o2's voltage should oscillate between 0.2-0.8v once the car is hot and running in closed loop.
The rear o2's voltage should show something close to a straight line voltage or very mininmal variation if the cat.converter is performing up to standards.

The easiest way to check them is put them back on the car and use an obd2 tool that has live data/graph capability...or use an obd2 bluetooth dongle(ebay $20) and use an android phone running the torque app or a laptop running something like ScanXl Pro.

I know people can also check them with a voltmeter but i've been told that can ruin the sensor at times...hence ive never done it.

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J30MAN said:

Heres a video I took of the O2 voltage for both. They were both at 1.275 upon start up, then slowly dropped to the level you posted and started dropping as I have recorded. And you'll here my cat converter rattling in the video, it's been bad for a while now just haven't had the money for a replacement.

http://s1126.photobucket.com/albums/l616/j30man/?action=view&current=VIDEO0010.mp4

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001Stunna said:

Was the car fully warmed up when you did this?
I see o2 1 bank 1 be 0.00v for awhile

Put the car in neutral, and keep the pedal pressed down so you maintain a steady rpm(just in case it may cause the data to be skewed if not) and retry again if you have some time.

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