o2 sensor

I recently purchased my first FJ80 and this is my first post on here, I can't thank everyone enough for all the posts on here as they have been an enormous help on several issues. However my current question and problem is in regards to the upstream O2 sensors on the exhaust downpipes. On the...

Hi guys, My 1993 80 series has been having o2 sensor issues, its throwing codes, 21 and 5. Ive replaced the old o2 with a new one from online auto parts and it hasnt fixed the issue. Im getting 12v to ox1 on the diagnosis board when from what i know its ment to be between 0.9-0.1v. For a bit...

Hey all, I have a bit of a niche question. So I have 07 FZ-FE Cruiser from Dubai. I have been having real issues with fuel mileage and a bit of a shaky idle. So I have been trying to do some diagnostics on it and it came up that the upstream sensor on bank 1 was having issues. So I ordered the...

NGK NTK 24044 O2 sensor. Made in Japan. New unused. I opened one box just for photos. $150 each, two available.

So I recently replace my exhaust system from the manifolds back and the job went really well. Like a little too easy. Job was done cranked it up and still had the reoccurring code 28.... so I dug in a bit and started tracing back wiring. I find that the previous owner had spliced the O² wiring...

Im importing this FJ40 next week to Florida. My guy has done an amazing job with 99% of the build. We transplanted a 1FZ-FE into it and it runs very well for the most part. It needs to be tuned properly and probably needs a new O2 sensor installed. He just doesn't have access to the equipment...

G’day everyone, new to this site so if I post in the wrong place please excuse me. I have a 2004 Sahara landcruiser with the 4.7L petrol engine (2uz-fe). Up until recently it has run like a dream, but now I have started getting a few issues. It started with the o2 sensors. First a bank 1 sensor...

so last weekend i was plowing snow with the 80 and my exhaust from the CATS was always questionable. leaked and just getting me by. so anyway i got stuck in the snow last weekend and while i was rocking it out the snow got wedged up around the CAT and removed the rusty pipe between CAT and...

Driving myself crazy with this one, as it's causing me to get a whopping 8 MPG. Consistent P0125 code with intermittent P0130 and P0133. FSM points to a bad O2 sensor, wiring to the O2 sensor, or bad ECU. Replaced sensor with Denso, no change. When I run my scanner, I'm not picking up any...

Where did you get your extender? I'm thinking of putting one past the convertor. Got a 402 code. Please send link of extender that will fit. Thanks Gman.

Where did you get your extender? I'm thinking of putting one past the convertor. Got a 402 code. Please send link of extender that will fit. Thanks Gman.

On the drivers side towards the back of the oil pan. The connection that’s taped to looks like it goes into the o2 sensor so I’m thinking it may be related.

Hello my fellow GXers! Here is my experience replacing the upstream O2 sensor on the passenger side:

Getting through baselining my new to me '93 FZJ80, and my next big project will be replacing the coolant hoses (to include the PHH and the heater control valve). Before doing that, I'm thinking of doing a PAIR delete. Some background... When I first bought the truck, there was an exhaust...

97 FZJ 80, European spec., delivered to Finland, no OBD2, 1FZ with 360 000 km on the clock. for the last 2000 km (starting in the dunes of Grand Erg Oriental/Sahara desert) the CEL came on intermittendly. When trying to get a code with the paperclip method: continuous blinking and after...

Hi, Does anyone have the part number for the mounting nuts for the oxygen sensors for a 1994 land cruiser? I can't seem to find it. Thanks

I'm looking for a quick check on my troubleshooting logic. I have a 94 with new denso o2 sensors that recently started to throw a persistent obd code 21 - heated o2 sensor on cyl 1,2,3. I swapped the two sensors, and expected that if the failure was on the o2 sensor side, to code would flip to...

Got P0037 code and replaced both downstream O2 sensors with Denso. Code came back on and took to my local shop but they were unable to diagnose and suggested going to dealer who may have better diagnostics. Any ideas before trying to navigate stealership nightmare?

Like some before me, I am searching for new O2 sensors for my 1994 Toyota Land Cruiser. The original Toyota kit has been discontinued, and other replacements seem to be hard to find. Other threads on here have sent me looking for DENSO 234-4520, but even that seems to be difficult to reliably...

O2 Sensor bypass question… So, to put rock sliders on my 96 LX450 (35s/529 gears) I had to cut out the cats and replace it w a straight pipe. The rear part of the pipe w the downstream O2 sensor was also cut out. So, there is no rear sensor just an empty plug. Obviously the check engine light is...