1993 1FZ-FE 02 Sensor Replacement (1 Viewer)

[CharlieS]

On qustion. way do you insist using Denso and shaving it, and what have you, when they are avileble in USA from toyota?

just asking, life is complicated as it is

1) None of the Toyota or NTK sensors were available for my OBD1 (1994) when I was shopping, and I searched extensively.

2) $100 for two vs $300 for two.

3) Same function.

4) If I can't shave off a small platic nib, I have no business working on cars.

 

[Desert Dino]

1) None of the Toyota or NTK sensors were available for my OBD1 (1994) when I was shopping, and I searched extensively.

2) $100 for two vs $300 for two.

3) Same function.

4) If I can't shave off a small platic nib, I have no business working on cars.

They were allways avilble under different number @Cruiesrdan posted the number 200$ for two

 

[CharlieS]

They were allways avilble under different number @Cruiesrdan posted the number 200$ for two

I am happy that provides an option for you and others that prefer to exclusively buy Toyota dealer parts.

You asked why I used the Densos and I did my best to answer your question.

The Densos work. They are cheaper. They are readily available. Not everyone wants to pay twice as much for a part that functions in the exact same way. It's good to have options.

One final thought: the "Toyota" sensors are differently packaged NTK or Denso sensors. Toyota doesn't make O2 sensors.

The sensor you are recommending is only "correct" for one of the two sensors. I haven't bothered to see if it is even really available, or just on some parts aggregator sites where they cancel the order due to parts being unavailable. I can't be bothered when the other ones work and are cheap.

 

[effjay80]

I need a pair for my 94. Are legit 89465-69115 legit available as OUQ shows zero inventory. Sorry pummel dead horse.

 

[effjay80]

Okay for those following at home the 89465-69115 was available from local dealer at $196 a unit even though Partsouq shows 0. Yes $196 a sensor.

 

[Fzj80 1997]

I replaced my sensors with denso 234-4153 in my 93 and am having an uneven idle and stall when warmed up. I have a Bluetooth obd1 scanner and the o2 sensor was reading a constant lean condition with no change throughout the rpm range. I unplugged the sensors and the car is now idling perfect with no unevenness through the rpm range and no stalling out. Any input? Should I just throw in some super expensive oem sensors?

 

[Fzj80 1997]

I took out the denso 234-4153 sensors and swapped in some ngk o2 sensors meant for a 93 yesterday and have driven about 100 miles. The truck had a rough idle at first but I think that could be attributed to the ecu relearning some stuff. The truck never died and the rpm fluctuation at idle was only about 200 rpm’s vs 200-800 originally. After the initial rough idle, things have completely smoothed out and I have not had any idling issues. Maybe this sensor retrofit does not work for 93’s? There is an extra ground wire that 93’s have and 94’s do not on the same connector shared with the o2 sensors going into the ecu. Maybe this has something to do with it?

 

[SpeleoCruiser]

I took out the denso 234-4153 sensors and swapped in some ngk o2 sensors meant for a 93 yesterday and have driven about 100 miles. The truck had a rough idle at first but I think that could be attributed to the ecu relearning some stuff. The truck never died and the rpm fluctuation at idle was only about 200 rpm’s vs 200-800 originally. After the initial rough idle, things have completely smoothed out and I have not had any idling issues. Maybe this sensor retrofit does not work for 93’s? There is an extra ground wire that 93’s have and 94’s do not on the same connector shared with the o2 sensors going into the ecu. Maybe this has something to do with it?

Which NGK sensors did you go with and do you still see them in stock where you bought them? I'm having a very similar issue.

 

[BTLSHP]

Which NGK sensors did you go with and do you still see them in stock where you bought them? I'm having a very similar issue.

After not finding Toyota sensors, I put an Amazon sourced NTK 24044 in August 2024, I am guessing it was fake and by November it was not sending out a signal. The end of the sensor was not a thimble but a flat planer surface like a Bosch. That should have been a clue.

I ordered two 89465-69115 from Dave Stedman at Japan4x4, under $100 each. The pigtail is long enough for either Cat an I know of no difference between a '93 & my '94.

 

[SpeleoCruiser]

After not finding Toyota sensors, I put an Amazon sourced NTK 24044 in August 2024, I am guessing it was fake and by November it was not sending out a signal. The end of the sensor was not a thimble but a flat planer surface like a Bosch. That should have been a clue.

I ordered two 89465-69115 from Dave Stedman at Japan4x4, under $100 each. The pigtail is long enough for either Cat an I know of no difference between a '93 & my '94.

Thanks for the info and source! Appreciate it.

 

[Bigtoepfer]

It's not OEM but they fit perfectly and a year now running with now more LEAN CEL on my 94. As of this moment 2/26/25 they are $25/ea

BOSCH 15728

https://www.amazon.com/Bosch-15728-Oxygen-Universal-Fitment/dp/B000BZL07Q

​

 

[Pz10420]

It's not OEM but they fit perfectly and a year now running with now more LEAN CEL on my 94. As of this moment 2/26/25 they are $25/ea

BOSCH 15728​

https://www.amazon.com/Bosch-15728-Oxygen-Universal-Fitment/dp/B000BZL07Q

​

I have been running these in my 93 for about 3 years now. The NTK or Densos that I used to use I would barely get a year out of before they would fail.