New O2 Sensor - Clicking Behind Dash/Instrument Panel

[Beats_Antique92]

Good Afternoon,

I just finished putting a new Denso Oxygen Sensor into my 92 Accord EX Sedan. I followed the steps laid out in my Haynes Repair manual.

After reconnecting the negative battery terminal I went for a test drive to see if the CEL would stay off. To my dismay it did not, and I am still pulling a 01 (Oxygen Content) code.

On top of that, there is now a regular clicking noise coming from behind my instrument panel. The noise only happens when I am driving but not while I am at rest (such as a stop light) with the engine running. My first guess would be that the new O2 sensor is functioning, but it is still staying in "open loop mode".

The clicking is disconcerting to me because of some horror stories I've heard from my mechanic regarding bad O2 sensors burning out the computer. (My mechanic actually refused to put in anything less than an OEM sensor because this happened to him and he ended up having to buy a new computer for one of his clients vehicles)

Any thoughts, experience, or anecdotes are welcome and appreciated. Thank you.

[oyajicool]

I really don't think the new sensor has anything to do with clicking behind of instrument panel. To be certain, put your old one back and see if the sound would go away.

As for non OEM O2 sensor frying the ECU, it's a first for me to hear. I really don't know how that could happen unless the power was on during replacement of the sensor. Even this is only happening in my head. That ECU was about to fail if you ask me and his customer talked mechanic to buy new one since he didn't have anything to explain why it happened.

But then, what do I know?

There's a thread on how to check the O2 sensor, on this forum. Look for it.

[BRcb7tuner]

It sounds like it could be your main relay that is clicking. When it's clicking look directly above where the clutch pedal is and there is a grey box and see if that's what's clicking. Also on you o2 sensor check the plug and make sure the wires are in there good. I was getting a o2 code and it ended up being a lose wire in the plug.

[oyajicool]

OMG.

If if was main relay that is clicking, it will be clicking all the time while engine is running or ignition switch is on. Or engine may not be running at all since it supply power to fuel pump and ECU. Since the sound is not there with car idling at stop. You can rule out the main relay for clicking sound.

I was almost going to say the sound is from the speedometer. But Accords' don't come with mechanical speedometer. So, I didn't say that.

[Bad_dude]

Most likely your wiring is loose or some thing.

I don't know about your mechanic, obviously he does not know any thing about Japanese imports. What good is a mechanic if he can't put in an O2 sensor? What good is your mechanic if he does not know that most Japanese imports use either Denso or NGK/NTK. I would look for another mechanic with more experience and confident in his/her work. Just an advice. Check and follow the lead of the O2 sensor, make sure it's not touching the heat shield that could melt the insulation and short the wires inside.
Good luck.

[eljhonyboy]

well my friend, to know if your O2 works perfect, you can check with a multimeter and the signal has to switch between .700 and .200,but to make sure, check the wires,

[Beats_Antique92]

Thanks for the advice guys. I will look into wiring and check my grounds.

[1337EJ1]

To be certain, put your old one back and see if the sound would go away.

You must try it

[eljhonyboy]

just unplug the socket, but you spend more fuel,

i had a problem with the o2, the car lose the power, and no codes recorder, thats why i unplug the o2 and the car works ok, i just remplace for other o2,,


good luck my friend,,