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  1. IMG_20251128_121900035.webp

    IMG_20251128_121900035.webp

  2. SparkYellow

    OBD2 Scanner/App: what sensors/values to monitor?

    During my long drive yesterday I monitored the oil temp in relation to rpm. If I keep the rpm below 2500, the oil temp stays below 212. On steep inclines over 152E, I bit my lips and stayed in the slow lane in 6th gear. 😭 When I couldn't hold back on I-5S, the temp climbed to 220+. When the...
  3. SparkYellow

    OBD2 Scanner/App: what sensors/values to monitor?

    Is it still $5 for life? But I get it. I still haven't paid for Pandora yet. Wish they would do $5 for life. So your A and B temps show a cooling system controlled by one mechanical thermostat and no further intervention? Edit: Found Jango!!
  4. Screenshot_2025-11-24_080503.webp

    Screenshot_2025-11-24_080503.webp

  5. SparkYellow

    The gate keepers in the cooling system

    The drawing on the diagram doesn't show the shape of the thermostat that I am familiar with. It is a younger sibling... 😂 https://asianparts.ca/parts/xjp-1541310-p50215171-tama-thermostat-oe-specified-temperature-190-degree-f-88-c/ Still haven't found the primary coolant temp sensor or the...
  6. Screenshot_20251124-004432.webp

    Screenshot_20251124-004432.webp

  7. Screenshot_20251124-004629.webp

    Screenshot_20251124-004629.webp

  8. SparkYellow

    The gate keepers in the cooling system

    Found one coolant temp sensor on the CX-3. It is at the bottom center of the radiator. Still looking for the other one and also the CCV.
  9. Screenshot_20251123-235124.webp

    Screenshot_20251123-235124.webp

  10. SparkYellow

    OBD2 Scanner/App: what sensors/values to monitor?

    You held off long enough! I paid just to get rid of the banner that took up screen space. 😅 Appreciate your reply. What does Temp B mean to you in terms of how the cooling system functions?
  11. SparkYellow

    OBD2 Scanner/App: what sensors/values to monitor?

    Hello are you still monitoring the stats while you drive? If so, can you check if you have two sensors/values for the engine coolant temp, A and B? 🙏
  12. SparkYellow

    CX-7 Radiator fan, P0441 Error and question!

    Same here! I have been using a Bluetooth obdii device with an app for many years, but I found out this year that newer device/app combo provides more functionalities. I looked up your code and can't make sense of how it relates to the symptoms you described. What scanner device do you have? I...
  13. SparkYellow

    CX-7 Radiator fan, P0441 Error and question!

    A few years ago I had the same problem on my mini. The fan kicks on when it wasn't running hot and it stayed on after the engine was off. It turned out to be the fan switch. If I remember correctly, it was a small part and easy to replace. The next step would have been the temp sensor. That's...
  14. SparkYellow

    The gate keepers in the cooling system

    In the typical Friday afternoon traffic on 101 South, I finally figured out how the cooling system works. Temp A shows coolant temp in the engine block. The thermostat is the first gate keeper in the system. It doesn't open until the engine gets up to temp at 180. It is mechanical and...
  15. SparkYellow

    The gate keepers in the cooling system

    So temp A is from the primary sensor near the thermostat. Temp B is from the sensor on the firewall near the heater core. Does A have anything to do with B?
  16. Screenshot_2025-11-20_183938.webp

    Screenshot_2025-11-20_183938.webp

  17. SparkYellow

    The gate keepers in the cooling system

    Temp B is from the radiator. I just checked after arriving at work and the reading on the cap is consistent with the OBD figure. The lower rad hose was warm, the top of the rad was cool to the touch, upper rad hose was hot hot hot. For this one-hour drive, coolant in the radiator wasn't...
  18. Screenshot_2025-11-20_090227.webp

    Screenshot_2025-11-20_090227.webp

  19. Screenshot_2025-11-20_090314.webp

    Screenshot_2025-11-20_090314.webp

  20. Screenshot_2025-11-20_090245.webp

    Screenshot_2025-11-20_090245.webp

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