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1997 Jeep Grand Cherokee

Question: coolant sensor bad

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beltsplicer, 5.2L V8, Colonial Beach, VA, August 04, 2009, 09:19
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I have a coolant sensor bad display on my screen. I have replaced the sensor in the overflow bowl and the one on the manifold behind thermostat, but display still shows bad sensor. any ideas? thanks. Patrick

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  • Answer #1

    Bret Bodas August 07, 2009, 11:44
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     Master

    The display is showing a low coolant level, is that correct?

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  • Medium-star Best Answer
    beltsplicer August 07, 2009, 20:49
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    No Bret. the first alert said low coolant level. I changed the sensor in the overflow bowl. then about a month later, the next alert said"coolant sensor bad". I put a new sensor on the manifold, and now the bad sensor alert only comes on when I first start the truck. any other ideas? thanks. Patrick

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  • Answer #3

    Visitor, April 19, 2010, 13:15

    Must be a common problem mine has given that same message off and on since i got it. The guy I got it from told me he had replaced it. My mechanic said something about not using the right sealant or something when they put it back on might be causing it. Only, just had the water pump replaced and now when the coolant sensor light comes on i leak fluid fromt the back side of the motor. I need to get this checked out. Does not leek if the coolant sensor msg does not come on.

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  • Answer #4

    Visitor, April 20, 2010, 17:12

    no, the display says "coolant sensor bad". I've changed it twice. one guy said I have to go to dealer to reset the code. not sure about that

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    smithfrancelia, August 07, 2010, 09:39
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    its suppose to eventually replace its self mine has been doing same thing

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  • Answer #5

    orvis 4x4 July 01, 2010, 00:29
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     Enthusiast

    have had the same issue here for over 2 years. it does not seem to hurt anything. have replaced sensors also. had the codes reset but it keeps coming back.

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  • Answer #6

    Visitor, July 12, 2010, 21:02

    how much is a coolant sensor

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    smithfrancelia, August 07, 2010, 09:40
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    $26.00

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  • Answer #7

    Visitor, August 28, 2010, 08:12

    My Jeep, too! Replaced the coolant tank float sensor, with no luck... haven't changed the coolant temp sensor yet, BUT... I found the following link/thread about it. I haven't gone through all the suggested process yet, but the guy posting the answer suggests this is all no more than a bad solder joint on the circuit board in the Vehicle Information CEnter (VIC) where the wiring for the coolant tank sensor wiring connects to it. For what it's worth, here's that link! Good luck!

    http://www.jeepforum.com/forum/f13/coolant-sensor-bad-fin...

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  • Answer #8

    Visitor, September 13, 2010, 20:21

    i also have the same problem. both of my coolent sensors have been replaced, and it still comes on, it just worries me.

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  • Answer #9

    Visitor, March 07, 2011, 08:21

    The problem Has nothing to do with the coolant sensor, Or for that matter anything to do with the cooling system at all, Check out Jeepforumdotcom & under "coolant sensor Bad fix" You will see that it actually has to do with crummy soldering on the back of the VIC (Vehicle Information Centre), & all that is needed to fix this problem is a bit of solder & some patience, I know this because I have changed my coolant sensor on the engine block and in the reservoir & the thermostat just to be sure & all with brand new original jeep parts not aftermarket rubbish, & all it took was a bit of solder & searching the answer on jeepforum.com

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  • Answer #10

    TheRealGus March 07, 2011, 08:25
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    The problem Has nothing to do with the coolant sensor, Or for that matter anything to do with the cooling system at all, Check out Jeepforumdotcom & under "coolant sensor Bad fix" You will see that it actually has to do with crummy soldering on the back of the VIC (Vehicle Information Centre), & all that is needed to fix this problem is a bit of solder & some patience, I know this because I have changed my coolant sensor on the engine block and in the reservoir & the thermostat just to be sure & all with brand new original jeep parts not aftermarket rubbish, & all it took was a bit of solder & searching the answer on jeepforum.com

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