Question about 1983 Oldsmobile Ninety Eight

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I replaced the low coolant sensor located on the radiator.But the low coolant light is still on including the beeping sound. it sometimes goes away then it will come back on.

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Check the wire to the sensor.

Posted on Nov 17, 2009


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The low coolant light keeps going off have had the radiator replaced and it doesn't get hot but the low coolant light still goes off

There is a switch (sensor) that is installed in the radiator tank, partway down one side that monitors coolant level. It would not be included with a new radiator, so if it was not replaced when the radiator was done, chances are that the sensor was just moved from one to the other. The sensor is probably going bad. You were right about the A/C. It has nothing to do with this issue. It is not a critical sensor, but light can be annoying. If you replace it, chances are your problem will go away. If you wish, you can disconnect the electrical cable from the sensor. If the low coolant light is then lit, you can ground the sensor cable to make it go out. If it goes out with the cable removed, then you can just tie it back. Just remember, though, that you no longer have a low coolant detection capability. Regular checks of the coolant level would be required, although this should be normal procedure anyway.

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If you are refering to the coolant level sensor (causes low coolant light to turn on), it is located on the radiator near the battery on the passnger side. It is on the radiator tank, just below the radiator cap and the upper connection for the transmission line. Heres a picture of the sensor on my 2002 Impala when I removed the radiator (it's the square thing in the center of the picture):


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1 Answer

I just bought a 96 mark, message center reads low engine coolant but heat gage remains normal. coolant not low. doesn't seem to hurt anything, just annoying. low coolant sensor location?

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Here's a link which will give you more info.

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