Which O2 sensor to buy??

[BYprodriver]

Wayne at Pelican says Bosch is OEM supplier & the way to go for replacement. Seems like they last longer & give better signal. Check Pelican DIY for more info.

[boxzilla]

I went with the Bosch units I found on Amazon. The price was reasonable and I also factored in Amazon's return policy and felt like I would be getting the real deal on Amazon vs. Bosch units on EBay.

I also have a 2001 and found it very very easy to replace with the exception of the rear post cat on the passanger side. It took a bit of effort in that the cable and plug are in a tight spot. Definatelly get a set of open end box wrenches for the job...It's all you will need.

[mptoledo]

Thanks for the responses. I do appreciate them.
I want to fix my tranny noise first, but sensors are second on my list of things to do this month.

Do you guys think that will improve my MPG? I get around 23hwy, but used to get 28ish. I already did the fuel and air filter, bi yearly oil changes and new tires.

[gschotland]

I recommend investing in an oxygen sensor wrench in order to avoid the possibility of an open end slipping off, resulting in a smashed finger or worse. I used it with a long handle ratchet with a head that could be vertically angled. Being able to use a cheater bar for added torque was a big help. A couple of mine were really tough to remove.

All major auto parts stores stock O2 sensor wrenches for $10-$15, but I picked one up on fleabay, $9.95 delivered. Very well worth it IMO.

http://cgi.ebay.com/ebaymotors/Performance-Tool-W84008-Oxygen-Sensor-Wrench-Offset-_W0QQcmdZViewItemQQhashZitem5ad9e70d7bQQitemZ39020 2854779QQptZMotorsQ5fAutomotiveQ5fTools

With the right tools and sensors with OEM plugs this is a very easy job.

BTW, ********************************AZ's got Bosch with the plug for $121 each. The ones I got from MaxSpeed were Walker (I believe), another big name in O2 sensors.

[Oaktown 986]

Originally Posted by mptoledo

Thanks for the responses. I do appreciate them.
I want to fix my tranny noise first, but sensors are second on my list of things to do this month.

Do you guys think that will improve my MPG? I get around 23hwy, but used to get 28ish. I already did the fuel and air filter, bi yearly oil changes and new tires.

I've put about 300 miles on my 99 since I put in precat O2 sensors and a new MAF; i'm getting nearly 30 mpg up from about 20 last month. And the car's driving like brand new.

Amazing, and the O2's only took about 15 minutes after letting penetrating oil set in.