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Product Features
TRQ oxygen sensors are manufactured to precise specifications using premium raw materials to optimize your vehicle’s emission system. Each sensor is isostatically-pressed for improved strength and durability, and plasma-sprayed to improve sensitivity and prolong the service life of the sensors. Oxygen sensors wear out over time and should be replaced every 60,000 miles to prevent poor engine performance. TRQ recommends replacing the oxygen sensors in sets to optimize fuel economy and reduce overall emissions. All products are fit and road-tested in our Massachusetts R&D facility to ensure we deliver on our promise of Trusted Reliable Quality.
What is Upstream vs. Downstream?
Install Tip: You may be required to reset the vehicle computer after installation of this part.
Returns: Parts with electrical components cannot be returned once installed.
Attention California Customers:
WARNING: This product can expose you to chemicals including Lead and Lead Compounds, which are known to the State of California to cause cancer, and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.
Lifetime Warranty
This item is backed by our limited lifetime warranty. In the event that this item should fail due to manufacturing defects during intended use, we will replace the part free of charge. This warranty covers the cost of the part only.
Returns: Parts with electrical components cannot be returned once installed.
FREE Shipping is standard on Orders shipped to the lower 48 States (Contiguous United States). Standard shipping charges apply to Hawaii, Alaska and US Territories. Shipping is not available to Canada.
Expedited is available on checkout to the United States, excluding Alaska, Hawaii and US Territories as well as P.O. Boxes and APO/FPO/DPO addresses. Final shipping costs are available at checkout.
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Brought to you by 1AAuto.com, your source for quality replacement parts and the best service on the Internet.
Hi, I'm Don from 1A Auto. I hope this how-to video helps you out, and the next time you need a part for your vehicle, think of 1AAuto.com. Thanks.
In this video, we're going to replace the upstream oxygen sensor which is the oxygen sensor that's in front of the catalytic converter. This is a '97 Buick LeSabre. It has the 3.8-liter or a 3800 engine. Engine used in many, many, many GM vehicles. The most important tool you'll need is a 7/8 O2 sensor socket which you'll see in the video. Then you'll need a couple of extensions and probably a breaker bar and maybe a piece of pipe for some extra leverage to get it out.
Here's your harness for your upstream O2 sensor. Pull out the clip and lift this up over. Move the harness and then remove the clip from the bracket. You see the oxygen sensor down here. I'm just going to sneak this harness out of the way. This is a piece of socket wrench. Use a special O2 sensor, 7/8 inch socket, that's got to cut out for the harness. Slide that over. Use the pipe for extra leverage.
Once it's loosened up, it comes out about on a quarter and a half a turn, so spray it down with some penetrating oil. Screw it back in, then do it back and forth a couple of times to loosen it up as much as we can. Spray it with some more penetrating oil. Screw it down back in and loosen it up. After about two or three iterations of that, it finally comes out.
The old part, the new part from 1AAuto. As you can see, the connectors are the same.
You can start this by hand before I put the socket on. Now we're using the socket it to tighten it back up.
We hope this video helps you out. Brought to you by www.1AAuto.com, your source for quality replacement parts and the best service on the Internet. Please feel free to call us toll-free, 888-844-3393. We're the company that's here for you on the Internet and in person.
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