weswork

iTrader: (4)

I going to be replacing my exhaust very soon. I was wondering if I should go ahead and purchase new o2 sensors and have them on hand as a precaution? It seems that from most of the install posts I read either they get damaged or are very difficult to remove. At $133/ea from one of the sponsor vendors, while not cheap it seems like it would be good insurance to have in order to get the install done in one session and not have the car down or have to result to getting them from the local dealer. Any thoughts or input would be welcomed.

Joe Z

iTrader: (10)

How old are your O2 sensors ???

It really all comes down to who is doing the install, if they have the right tools on hand and most importantly if they know what they are doing..

Here are the OEM direct fit downstream O2 senors from DENSO.



Normally, they should NOT be damaged from removing or installing... Unless they are installed and stripped at the Factory..

The Number # 1 problem that installers run into is wrenching on HOT to Warm O2 sensors.
That is a guaranteed disaster..!!

They should be allowed to cool to ambient temperature before wrenching on them.


~ Joe Z

weswork

iTrader: (4)

Thanks Joe, I was hoping you would be one of the people that would reply. My F is an early 08 model but has less than 17K miles on it. Based on your comment about experience, there really aren't people with F experience here in Charlotte. Now if we are saying that these sensors really are that much different from say Nissans, Infinitis, Suburas, etc. then I think I am good. If the F/Lexus sensors are more finicky then others then I may go the easy route and just let the old ones be unplugged and plug in the new ones, ensuring the wires are not twisted of course.

Sewell is the vendor I was referencing and part # 89465 (I am pretty sure this is the right one). The clublexus online price is $133.93 (vs normal of $219.56)

tenspeed

iTrader: (1)

RockAuto (under emissions):

DENSO Part # 2344521 Wire Length 21.70; DENSO is the O.E. Manufacturer; Downstream $68.79

DENSO Part # 2349048 DENSO is the O.E. Manufacturer / Air Fuel Ratio Sensor; Upstream $146.79

ShadowISF

iTrader: (10)

Your car is fairly new and so are your 02 sensors. There shouldn't be a problem at all unless your mechanic is really inexperienced.

Joe Z

iTrader: (10)

No problem...

Exactly, its not about the F... It's about knowing what to do and how to treat the O2 sensors..

If you click on my photo, it takes you to Desno..

Also, keep in mind.. Unplugging the sensor from the top side, involves getting underneath the carpets (of Drivers & Passenger side) closer to the tunnel wall, just below the knee airbag areas.. ..

When installing the used or new sensor its important to turn it counter clockwise 3 full turns before starting to thread it back in to the sensor bung...

~ Joe Z

jr306

Installed Borla then Joe Z then stock and I had no problems. Mom and pop place too with an older gentleman doing the job. I just help him and guide him through it with all you guys thought me on here. Just be gentle.

darbs242

iTrader: (5)

If your goign to put new ones in, do it when you upgrade headers not your catback, if you ever do headers your rear o2's wont work anyway. I got away with changing my whole exhaust and have had zero problems with all my factory o2