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Thread: Temp sender unit

  1. #1
    Join Date
    Jan 1970
    Location
    Salisbury - Brisbane
    Posts
    286

    Temp sender unit

    Hi all, just replaced the temp sender unit in my Isuzu County, but the gauge now shows red hot at normal operating temperature.

    Does anyone know of the fix for this? Can I just put a resistor in the cct to correct it?

    The unit was supplied for a 4bd1 engine, but I'm thinking the LR cct is different to Isuzu's.

    Thanks

    Bruce.

  2. #2
    Join Date
    Sep 2007
    Location
    Kiwiland
    Posts
    7,253
    Quote Originally Posted by BMac View Post
    Hi all, just replaced the temp sender unit in my Isuzu County, but the gauge now shows red hot at normal operating temperature.

    Does anyone know of the fix for this? Can I just put a resistor in the cct to correct it?

    The unit was supplied for a 4bd1 engine, but I'm thinking the LR cct is different to Isuzu's.

    Thanks

    Bruce.
    I had exactly the same problem. I used a resistor which I think was 18 ohms to correct the reading. I'll check later on and get back to you.
    Landrovers use 10v as the temperature gauge source, japanese cars use 5v and that's where the high reading is coming from.

    If someone has a landrover part to avoid these shennanigans I'd probably buy it.

  3. #3
    Join Date
    Jan 1970
    Location
    Brisbane, Queensland
    Posts
    4,114
    FWD at Fairfield or Zenith Engineering at Milton would probably have the correct part.
    L322 tdv8 poverty pack - wow
    Perentie 110 wagon ARN 49-107 (probably selling) turbo, p/steer, RFSV front axle/trutrack, HF, gullwing windows, double jerrys etc.
    Perentie 110 wagon ARN 48-699 another project
    Track Trailer ARN 200-117
    REMLR # 137

  4. #4
    Join Date
    Jan 1970
    Location
    2780
    Posts
    8,277
    I think the part number sticky thread in this section has the correct LR part number. I did the same thing, and bought the V8 version from the same era that showed overtemp. Bought the other one, $18 or so and sorted.

  5. #5
    My temp guage started reading too high, so I replaced both the guage and sender with VDO items.

    Highly recommended.

  6. #6
    Join Date
    Sep 2007
    Location
    Kiwiland
    Posts
    7,253
    I checked today, it is 18 ohms I used to correct the reading.
    If I could fit a VDO, then I would. Sadly the rangie clusters aren't easy to modify.

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