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Old 26th July 2010, 02:58 PM
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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.
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Old 26th July 2010, 06:52 PM
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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.
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Old 26th July 2010, 08:40 PM
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FWD at Fairfield or Zenith Engineering at Milton would probably have the correct part.
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Old 26th July 2010, 09:04 PM
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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.
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Old 27th July 2010, 03:13 PM
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My temp guage started reading too high, so I replaced both the guage and sender with VDO items.

Highly recommended.
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Old 28th July 2010, 07:47 PM
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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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