Question about 2002 Jeep Grand Cherokee

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Low coolant sensor keeps going off and it's not low

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Pull the snesor out of the radiator and clean it, if that doesn't stop the problem replace it, they are fairly cheap and very easy to replace..

Posted on Apr 28, 2010

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Posted on Jan 02, 2017

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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.

Nov 23, 2015 | 1986 Oldsmobile Delta 88

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How to I get the, "low coolant", light to turn off on my 2001 Chevy lumina


have the coolant sensor checked and check the wire to it
they work by having a continuous power supply through the sensor through the coolant to earth to keep the light off
any break in that wire of sensor results as a low coolant because the power can no longer earth out and so the light comes on

Aug 13, 2015 | Cars & Trucks

1 Answer

My heater isnt working, the temperature gage flucuates, and it keeps telling me it has low coolant even though I just added coolant


low coolant sensor is probably just dirty. cold air could also indicate n air bubble in the line. could also be thermostat. try that first.

Nov 30, 2011 | 2000 Pontiac Grand Am GT

1 Answer

Can low coolant sensor keep car from starting radiator is full but light is still on


low cooland will not keep you eng from starting ,the low coolant indicator sensor may fail but wont keep your car from starting ,you have other elctrical problem it might also make the low coolant light stay on i would have someone qualified in electrical to check it the car dont start due to no fuel or no spark to ignition

Aug 28, 2010 | 1994 Chevrolet Corsica

1 Answer

Low coolant light is on but does not overheat and


There is a low coolant sensor down alongside the radiator. Either the wire came off or the sensor has failed. Other than the annoyance of the light being on if you keep an eye on the coolant level it will cause no harm.

Mar 28, 2010 | 1994 Chevrolet Lumina

2 Answers

The coolant light keeps coming on but the car is not overheating. it does leak coolant every now and again not all the time.


it is the coolant level sensor that is making the light come on, your car does not have to be overheating for it to come on.
once the coolant level goes below the sensor it turns the light on.
If you fix the leak it will stop the light going on unless the sensor is faulty.
Hope this has helped.

Jun 17, 2009 | 1999 Oldsmobile Alero

2 Answers

JUST INSTALLED NEW ENGINE,THE COOLANT LIGHT KEEPS COMING ON


There is a sensor that if allowed to run low long enough will burn itself out. It is the low coolant correct?

Mar 08, 2009 | 1999 Pontiac Grand Prix

3 Answers

I have a 1998 chevy caviliar and this light keeps coming. it has a arrow with water underneith what is that


1 IT IS OVER HEATING 2. THE RESERVE IS LOW NO COOLANT OR A DEFECTIVE SENSOR I THE RESERVE TANK

Dec 04, 2008 | 1998 Chevrolet Cavalier

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