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Old 03-06-2007, 08:45 AM   #1 (permalink)
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Default Oxygen sensors

I am trying to locate the 4 oxygen sensors in my 04 Verona. The check engine light it on and I'm told I need to replace them in order to pass the emission test. I can't afford the OEM parts and thinking about do the job myself, replacing them with universal OS. Where are they located in the car ? (two before the catalytic converter and two after)
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Old 03-06-2007, 09:58 AM   #2 (permalink)
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Default Been there!

First see...
http://www.suzuki-forums.com/1g-1999...oon-light.html

Now, get the Zuki code scanned to find out which ONE sensor is probably at fault (doubt it's more than one). The scanner read out will pin-point the location / faulty sensor.

You can go OEM, generic, or universal sensor replacement. The cost varies SIGNIFICANTLY.

Let us know how it turns out and/or if you need more assistance.
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Old 03-06-2007, 10:00 AM   #3 (permalink)
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Please check with your dealer for any open recalls. There has been many issues with o2 sensors on the Verona. It may be a free repair.
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Old 03-06-2007, 02:43 PM   #4 (permalink)
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Default I ordered them already

Thanks for the link to those other post, very enlightening. I had the codes scanned at Auto Zone and they said I needed all four (probably lied to me). But I decided to order all four away online. I just need to know where they physically are located on the vehical. I intend on replacing them myself if no special tools are required.
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Old 03-06-2007, 03:19 PM   #5 (permalink)
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Get a 2nd opinion! All four toast?!? Don't think so. Did the light come on recently ONLY, or have you been living w/the prob? I'd ask the code reader to CLEAR the codes as well. Something fishy appears to be going on. Computer maybe? Have you jump started the car recently? Washed the engine bay? Had OTHER work done? Replaced the battery?

What engine do you have? I'm a GV guy, but someone here can help on the sensor location. Mine were a PITA to get to FWIW.

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Old 03-06-2007, 09:25 PM   #6 (permalink)
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I have been living with this problem for a several months. Intermitent at first, but solid for some time now. Yes, I did jump a car a while back but the light was already on. The engine is a 2.5L. I have not had any major work done on the motor. Yes I did buy a new battery 6-8 mos ago, I don't think the engine light was on at the time but can't be sure.
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Old 03-06-2007, 09:33 PM   #7 (permalink)
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Default Still looking for help with the OS location

Now that I have ordered them I'm going to replace them all. But I still need a reference to where they are? Someone please help.
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Old 03-07-2007, 06:35 AM   #8 (permalink)
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Default Pics! 2.5L and 2.7L V-6 configuration

Rear view of engine showing the UPPER two sensors. Now, directly below and after the cat converter (but not pictured) are the 2nd set of sensors. Bank 1 & 2 number 2 sensors.



These next two pics are of the wire lead CLIPS that you have to disengage from the wiring harness. As you can see in the 2nd pic, it was easier to destroy the engagement part of the OLD sensor plug, than to try and remove it conventionally. The area is REAL tight to get to. I used a super small screw driver to break the bond. I went in from below the car to access it. On the clip pic...don't worry about those little SIDE retaining clips. They hold the end of the plug TOGETHER, but not to the mating harness plug half.




The must have tools...22mm sensor socket and flex head ratchet.



Disengaging the CLIPS was the hardest part. Hope this helps.

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Last edited by Max; 09-01-2010 at 09:19 PM.
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Old 03-07-2007, 06:57 AM   #9 (permalink)
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I still contend that not ALL of your sensors are faulty, BUT...Zuki recommends sensor replacement at 100,000 miles in support of your changing them out.

I'm still enjoying terrific engine performance and 25/26 MPG jaunts!

Here's a pic of my first and only bad sensor at 205,000 miles!

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Old 03-07-2007, 10:12 AM   #10 (permalink)
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Thumbs up

I thought we were talking about a Verona?
The previous pics are excellent but for the GV/XL V6 engine not the straight inline 6 used on the Verona.

But to clarify the positions. Bank 1 is sensors are BEFORE the catalytic converter. Bank 2 is after the converters. So, Bank1 Sensor 1 is top sensor closest to the drive belts. B1S2 is closest to belts but downstream after the converter. Bank2 is of course the driver side sensors.

Again, this may be covered under warranty!
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