Low Coolant Level Bogus Warning - JeepForum.com

 
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post #1 of 12 Old 06-04-2009, 09:33 AM Thread Starter
SDT03GCOverland
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2003 WJ 
 
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Low Coolant Level Bogus Warning

I'm sure it's a no-brainer... I'm getting the annoying "Low Coolant Level" warning deal in my 03 Grand Overland. The level is CLEARLY not low. Sensor issue, right?

Anybody else experience and fix this?

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post #2 of 12 Old 06-04-2009, 10:07 AM
oldfamilyguy
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had this with another make once but not on the wj. it was the coolant level sensor though and think its common enough on any make . it started off random then became permanent. sorry don't know of any sure test. maybe tweak the connector a bit first to see if its that.
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post #3 of 12 Old 06-04-2009, 10:22 AM
97DCZJ
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Veryy common. I bought my ZJ mid april, and it said the same thing. I replaced it with a used one (I probably should've just bought a new one) and for about 3, 4 weeks now it's been saying once in awhile "Bad Coolant Sensor"

That's all it is

1997 Grand Cherokee Orvis: V8 5.2L, stock.
(Sold) 1998 Cherokee Sport: 4.0L I6, Stock.
(Sold) 1990 Cherokee: 4.0L I6, 4.5" Lift, 33" BFG's.
(Sold) 1997 Grand Cherokee Limited: V8 5.2L, 2" BB, 31" Dick Cepeks.
(Sold) 1999 Grand Cherokee Laredo: Build Thread; V8 4.7L, Stock.
(Sold) 1996 Grand Cherokee Laredo: Build Thread; V8 5.2L ,3.5" lift, 32" Tires
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post #4 of 12 Old 06-04-2009, 11:03 AM
Mickey_D
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And I'm not sure if everyone realizes or not, but it's not talking about some sensor in the radiator or something. It's a float in your coolant recovery reservoir. I'm just not 100% sure whether unplugging it is enough to bypass it or if you have to short the connector pins. In other words, I can't remember if the float switch is NO or NC...

1997 ZJ 5.2 Orvis, Baby!
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post #5 of 12 Old 06-04-2009, 11:18 AM
97DCZJ
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or just replace it. it's prob 15-20 dollars at pepboys and a 2 sec job

1997 Grand Cherokee Orvis: V8 5.2L, stock.
(Sold) 1998 Cherokee Sport: 4.0L I6, Stock.
(Sold) 1990 Cherokee: 4.0L I6, 4.5" Lift, 33" BFG's.
(Sold) 1997 Grand Cherokee Limited: V8 5.2L, 2" BB, 31" Dick Cepeks.
(Sold) 1999 Grand Cherokee Laredo: Build Thread; V8 4.7L, Stock.
(Sold) 1996 Grand Cherokee Laredo: Build Thread; V8 5.2L ,3.5" lift, 32" Tires
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post #6 of 12 Old 06-04-2009, 11:25 AM
97DCZJ
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Here ya go -

1: Locate Coolant Overflow Tank. The Little plastic piece that a wire plugs into is your Sensor.


2: Unplug the wire from the sensor


3: Pull out Sensor


4: Repeat steps backwards to replace with new sensor.

1997 Grand Cherokee Orvis: V8 5.2L, stock.
(Sold) 1998 Cherokee Sport: 4.0L I6, Stock.
(Sold) 1990 Cherokee: 4.0L I6, 4.5" Lift, 33" BFG's.
(Sold) 1997 Grand Cherokee Limited: V8 5.2L, 2" BB, 31" Dick Cepeks.
(Sold) 1999 Grand Cherokee Laredo: Build Thread; V8 4.7L, Stock.
(Sold) 1996 Grand Cherokee Laredo: Build Thread; V8 5.2L ,3.5" lift, 32" Tires
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post #7 of 12 Old 06-04-2009, 12:59 PM
YJMCBoy
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Low coolant level and bad coolant sensor common problem within the VIC connections...

quick search turned up this:
http://www.jeepforum.com/forum/showt...lant+level+VIC

2010 JK 4-Door Unlimited Sport- Soft top, V6, 6-speed standard, bone stock for now
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post #8 of 12 Old 05-07-2013, 01:33 PM
treii28
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Quote:
Originally Posted by SDT03GCOverland View Post
I'm sure it's a no-brainer... I'm getting the annoying "Low Coolant Level" warning deal in my 03 Grand Overland. The level is CLEARLY not low. Sensor issue, right?

Anybody else experience and fix this?
Rockauto has them for $13 plus shipping

Cooland level sensor
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post #9 of 12 Old 11-13-2013, 03:00 PM
sadegur
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I have a 2000 jeep grand Cherokee 4.7 ltr. I am getting a "low coolant level". All fluid levels are fine. I have replaced the sensor/float in the coolant reservoir with a new unit. Still same problem. Once the engine warms up, I get the same warning. Any suggestions?
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post #10 of 12 Old 11-23-2015, 02:13 PM
jimt1953
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Bogus Coolant- Level- Low message-2000 Jeep Gr Cherokee

I also have a 2000 Jeep Grand Cherokee with the same problem, although intermittent. The chime sounds and sometimes I get a very brief Coolant low message in the VIC, almost too brief to be sure that's what it says :-) I'm going to replace the sensor as the condition message is triggered by that sensor and I don't see any wiring or connection problems.
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post #11 of 12 Old 11-24-2015, 02:32 PM
AVR2
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Just FWIW, this the forum for the 93-98 (ZJ) Grand Cherokee. You'll get better help from the proper WJ forum - http://www.jeepforum.com/forum/f310/
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post #12 of 12 Old 03-02-2016, 07:44 AM
janakan
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Thank you 97DCZJ. This helped me.
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