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-   -   Coolant Temp Sensor Fault (http://www.jeepgarage.org/f78/coolant-temp-sensor-fault-29818.html)

Ozz1967 10-17-2011 01:34 PM

Coolant Temp Sensor Fault
 
Hey guys,

1998 Grand Cherokee Limited here. My computer thing in the center console in front of the shifter is calling out a "Coolant temp sensor" fault. It blinks in the engine bay area when going off.

I've already replaced the only sensor that i know to be a coolant temp sensor...the one in thermostat housing on the water neck. Is there another sensor some where I should check? She runs fine, the temp gauge reads correctly and doesn't over heat, but the constant beeping is driving me nuts. On the alternative, was there a reset button or something I should have pushed when I changed out the sensor to clear the original fault? I'm not the original owner and I don't have an owners manual to reference. Any help would be appreciated.

robpp 10-17-2011 02:19 PM

Re: Coolant Temp Sensor Fault
 
have you tried disconnecting the neg terminal for a while see if the puter resets.......

Ozz1967 10-17-2011 03:04 PM

Re: Coolant Temp Sensor Fault
 
No, I haven't, but I figured if it's anything like the Alero I had, there would be a reset button somewhere but I can't find one.

Frango100 10-20-2011 10:02 PM

Re: Coolant Temp Sensor Fault
 
As i mentioned in the other thread, have a look at the solders of the VIC circuit board. They can come loose after a long time and cause bad contact. Just resolder again.

LexSRT 10-21-2011 09:42 AM

Re: Coolant Temp Sensor Fault
 
I've heard of that and other problems of the V>I>C

OffCenter 11-20-2011 09:36 PM

Re: Coolant Temp Sensor Fault
 
Its the V I C. board, its no big deal unless you want to re sale your jeep, Its a small crack. that take 10 sec to soder. but you have to take dash off i guess to get to it, mine does it too. has for last 3k mile. ask someone about with a jeep and they told me.

1ABrian 02-02-2012 04:55 PM

Re: Coolant Temp Sensor Fault
 
Ditto in the VIC. If you decide to fix it, post pic of the Vic and how you fixed it

Ozz1967 02-02-2012 07:31 PM

Re: Coolant Temp Sensor Fault
 
Quote:

Originally Posted by OffCenter (Post 518949)
Its the V I C. board, its no big deal unless you want to re sale your jeep, Its a small crack. that take 10 sec to soder. but you have to take dash off i guess to get to it, mine does it too. has for last 3k mile. ask someone about with a jeep and they told me.

Strangely enough, once the weather turned cold, the warning stopped popping up.

I wouldn't even know where to look for this "board" any way. Is it behind the screen where the warning is posted or somewhere else? This is my first Jeep so I'm really unfamiliar with them.

1ABrian 02-03-2012 11:24 AM

Re: Coolant Temp Sensor Fault
 
Try this. Hopefully the pics are viewable. I think page 5-6
http://www.jeepforum.com/forum/f13/c...-fixed-175207/
but read it all. Pretty helpful

1ABrian 02-07-2012 04:20 PM

Re: Coolant Temp Sensor Fault
 
Just as a heads up, I did the VIC repair last night. Took my time and was a little over an hour start to finish. Drove around last night after and to work today in a BEEP FREE atmosphere. Worked like a charm.

Ozz1967 03-01-2012 05:41 AM

Re: Coolant Temp Sensor Fault
 
My overflow bottle is empty now, and my radiator looks like it's got red sludge all in it, but still cools ok. Going to fill the overflow back up but...as of right now, no beepings or warnings.

Frango100 03-01-2012 08:34 AM

Re: Coolant Temp Sensor Fault
 
Red sludge could be from corrosion, you better flush the whole system and put fresh liquid into it.


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