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  1. TheElegantFox

    FJ62/3FE Potential O2 Sensor Failure

    Got the truck back from the muffler shop, turns out we only needed to cut out the old bungs and weld in new pipe. It’s not winning any show awards, but the truck is more steady under power now. Will update if the road-trip CEL returns.
  2. TheElegantFox

    FJ62/3FE Potential O2 Sensor Failure

    Ah, rockauto has the downpipes for cheaper: 1988 TOYOTA LAND CRUISER 4.0L L6 Exhaust & Emission Parts | RockAuto -...
  3. TheElegantFox

    FJ62/3FE Potential O2 Sensor Failure

    Hmm, yeah this is gonna need to get cut out at the cat and new downpipes installed. I don’t think I can get my angle grinder to the bolts at the cats without damaging the surrounding area.
  4. TheElegantFox

    FJ62/3FE Potential O2 Sensor Failure

    What all is needed to replace the down pipes? Exhaust Down Pipe No. 2 for 88-90 62 Series Cruisers [17402-61010-A] - $108.89 : CruiserParts, The best place for Land Cruiser Parts! - https://shop.cruiserparts.net/index.php?main_page=product_info&products_id=66678 - pipe b Exhaust Down Pipe...
  5. TheElegantFox

    FJ62/3FE Potential O2 Sensor Failure

    This is the state of the lower O2 sensor attachment point, had it soaking for a few days in PB Blaster. Not much to grab onto, going to try a wrench and maybe a bolt extractor. These down pipes may be beyond saving.
  6. TheElegantFox

    FJ62/3FE Potential O2 Sensor Failure

    Looks like they have the sensors and the gaskets, but not the nut. May need to source those from the local hardware store.
  7. TheElegantFox

    FJ62/3FE Potential O2 Sensor Failure

    Ah, that’s a huge difference!
  8. TheElegantFox

    FJ62/3FE Potential O2 Sensor Failure

    Got the bolts soaking in PB blaster and was talking with a friend and he recommended some heat: https://www.lowes.com/pd/Lincoln-Electric-Port-A-Torch-Kit/1000119507 Thinking ahead, I can reach the lower O2 sensor nuts no problem, but the upper one that has the heat shield seems tricky. I can...
  9. TheElegantFox

    FJ62/3FE Potential O2 Sensor Failure

    This may be the one to get, supposed to be factory fitment: Advance Auto Parts - Down for Maintenance - https://shop.advanceautoparts.com/p/denso-first-time-fit-oxygen-sensor-c5010100889nd/10741063-P?vehicleIdSearch=13986&isAllVehicle=false
  10. TheElegantFox

    FJ62/3FE Potential O2 Sensor Failure

    Yeah for sure, I can’t verify if these are original or not but they do seem due to be replaced anyway. I’m not sure if the Denso units from Advance Auto are a direct fit, I think I was reading on here the wires are too short.
  11. TheElegantFox

    FJ62/3FE Potential O2 Sensor Failure

    After taking a look at the O2 sensors, I’m not wondering if it would be better to replace the down pipe as well. The unshielded one looks fused to the metal via rust.
  12. TheElegantFox

    FJ62/3FE Potential O2 Sensor Failure

    Hey all, I've been digging around the forums finding other forums with similar behavior to what I'm seeing with my truck, What my truck is currently experiencing(236k miles): CEL on highway after long operation under continuous load, 45m-1.5hr Seemly reduced fuel economy, down to 1/4 tank...
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