Where can I buy an O2 sensor? How hard are they to install? - Toyota Nation Forum : Toyota Car and Truck Forums

MortySnerd · 11-01-2005, 11:30 AM

Check Engine code says Bank 1, Sensor 2 circuit failure, and the dealership that is currently giving my ride 60k service told me the exact same thing. Cost to repair at dealer is $300, too steep for my blood.

Can anyone recommend a reputable online parts dealer? Also, the sensor I have to replace is the rear sensor. How hard is that to do yourself? The front one looks very easy, but I'm not even sure where the rear one is.

1999 LE 2.2L

Thanks for all help,
-Mike

Cyorke · 11-01-2005, 12:27 PM

jsut follow the exhaust pipe and you will see the other one. It is going to be located just after the catalytic converter.
As for replacing it, it is not that difficult. Youwill jsut need to make sure you have a wrench or socket that will fit the sensor, you may want to spary it down with some type of penetrating oil 15 or 20 minutes before you are ready to tackle it though jsut to help loosen things up some. Disconnect negative battery cable, Unplug the sensor, unscrew the sensor, screw new sensor in, plug sensor in reconnect battery and you are pretty much done with it. You will need to clear the light and reset the ECU though. Well actually this shoudl already be done since you ahve disconnected the battery. Start it up and see if your light is gone. If it is gone then you are done.

kenny1773 · 11-01-2005, 12:47 PM

easy to replace

best place to buy from

http://www.automedicsupply.com/

If you want to save money, bu ythe generic one and then cut and splice your factory toyota connector on to it.

Ranger X · 11-01-2005, 03:08 PM

I wouldn't do the whole splicing thing...well I've heard mixed opinions, but most people say that you shouldn't splice it, because you have to do it just right or else it won't function right. I don't know...seems to me that all you'd have to do is solder it together and put some heat shrink tubing over it, but I wouldn't want to screw it up.

camry300 · 11-01-2005, 03:53 PM

the generic O2 sensor abt 30 dollars needs splicing and come with instruction. They worked fine.

Mike Gerber · 11-01-2005, 04:18 PM

The wrench size you will need is 22MM. I believe you can also use a 7/8.

In addition, the connector is located under the driver's seat, not the passenger seat as the Toyota factory service manual for my 98 said it was. Once you break the sensor loose from underneath, go back inside the car and locate the connector. You might need to pull the carpet back (under the driver's seat) from the opening for the heating ducts for the rear footwell area. Now disconnet it and tie a long piece of twine or mechanics wire to the connector. Now pull it through from the bottom of the car, leaving enough twine or wire inside the car to pull the new connector back though. Now continue unscrewing the sensor itself. Screw in the new sensor tightly and then attach the connector to the piece of twine or wire. Now go back inside the car and pull it back to the inside of the car using the twine or wire. Reconnect the connector and you are done.

Mike

JetspeedCamry · 11-01-2005, 04:18 PM

Quote:

Originally Posted by Ranger X

I wouldn't do the whole splicing thing...well I've heard mixed opinions, but most people say that you shouldn't splice it, because you have to do it just right or else it won't function right. I don't know...seems to me that all you'd have to do is solder it together and put some heat shrink tubing over it, but I wouldn't want to screw it up.

It's not that hard...coupla wires. Cut/Strip/Solder/Heatshring/DONE. You can't stuff it up unless you mix the wires around the wrong way! But thats like putting your positive to the negative battery terminal!

stir_fry_boy · 11-04-2005, 07:23 PM

I would NEVER put a universal in my car. I don't want to take a risk of not getting a good connection. I bought mine for 167 at a local auto parts store. OEM Denso too. Beats everyone else because they buy direct from Denso. You will need a oxygen sensor tool (7/8") and a rachet you can get the o2 sensor socket at a local parts store for around 10$. It is not very hard at all, I did mine in the parking lot of the parts store. Just squirt with PB blaster before you try to take it off as it may be a little rusty....... Mine is a Cali car V6 with 3 of them.....Bank one is the one up frount just behind the radiator.