Anyone replace there o2 sensor?

ericem · Post by **ericem** » Wed Apr 29, 2009 1:23 am

Looked around the forum, and haven't read anywhere, where someone actually replaced it. I am thinking ill get a oem sensor it is around $120 but if it saves me $5 a week in gas it is worth it. Hopefully the engine will run a bit more consistent too. I figure I will replace the coolant temp sensor, and wires, and plugs again to, except all OEM.

Another question. I gapped my last set of plugs at 0.40. Is that ok? Anyone had better experience at other gapping? Thanks!

douglas vincent · Post by **douglas vincent** » Wed Apr 29, 2009 1:32 am

I have replace them alot.... $$$$$

ericem · Post by **ericem** » Wed Apr 29, 2009 1:34 am

Ok, any difference what so ever? fuel economy, throttle response etc? ANYTHING DAMMIT!

BSOD2600 · Post by **BSOD2600** » Wed Apr 29, 2009 3:29 am

If you hooked a scan tool of some sort (evoscan, b10scan, etc) and actually looked at the values of the various sensor, you would get a better idea if they're in spec or not. That is, unless you like replacing sensors willy-nilly at $!20 a pop

ericem · Post by **ericem** » Thu Apr 30, 2009 9:20 pm

why dont i get a check engine light when i unplug the sensor ? Tried unplugging it just made it drive a bit more rough.

xbn377 · Post by **xbn377** » Fri May 01, 2009 12:01 am

I think that happened to me also...I went with a Bosch universal replacement one.

ericem · Post by **ericem** » Fri May 01, 2009 12:25 am

Does the sensor from a N/A work to?!

log1call · Post by **log1call** » Fri May 01, 2009 2:18 am

Before you spend money on an O2 sensor, why don't you do the plugs and leads, fuel and air filters, check all your vacuum hoses.

Perhaps the O2 sensor readings will be within range and it will not be needed after that.

If you really suspect the O2 sensor the test for it is very simple. Warm the engine up and backprobe the O2 sensors connector and there should ba a fluctuatng voltage if all is well. If the voltage is fluctuating around the point four-five of a volt mark with swings of up to about point four of a volt up and down over the course of a few seconds you don't need to test anything else.

ericem · Post by **ericem** » Fri May 01, 2009 3:54 am

I still need to do my fuel filter, and I should replace my plugs again as I do not think the washers are sealing well, I remember two plugs were leaking at the washer when I checked the gapping... Wires are recent and OEM

I am always looking for leaks, but I can not find anything. Any common vacuum leaks?!

asc_up · Post by **asc_up** » Fri May 01, 2009 9:41 pm

ericem wrote:Does the sensor from a N/A work to?!

Yes. The wire on it is longer, but all you need to do is ziptie it to the engine pitch stop. Plus, it's like $50 cheaper.

ericem · Post by **ericem** » Sat May 02, 2009 12:12 am

That is it? Perfect! Have a new one in my N/A legacy. I think Sunday if it is a nice day, going to swap over my wrx suspension, o2 sensor, and coolant temp sensor. They are all oem and were replaced like during the summer.

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Anyone replace there o2 sensor?

Anyone replace there o2 sensor?