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Unread 01-04-2004, 06:37 PM   #1
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temp gauge ???

In my 91 wrangler. My temp gauge dosent work at all. I tried putting in a new coolant sensor, that didnt help, So i checked the wire from the sensor to the harness behind the cluster, that was good. Now i am looking at the printed circuit on the cluster and it looks good but i dont know how to check it any help would be greatly appreciated

also if i have to replace the printed circuit does anyone know where i can get one or will i have to sell something so i can afford one from the dealership

Also if anyone who reads this has a entire cluster for sale please leet me know, i know this part should be in the wanted section but i didnt want to start a new thread


91 sahara
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Unread 01-04-2004, 06:40 PM   #2
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I was able to pick a gauge cluster up off of ebay.
2005 LJ Impact Orange 4.0L Automatic (Tigger) - new ride
1991 YJ Sahara 4.0L Automatic
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Unread 01-05-2004, 09:09 AM   #3
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I just replaced the printed circut on my 89 YJ. I picked up a whole cluster panel for $50.00 at a junk yard. All I needed was the printed circut. A new P C was $40. at the dealer. I installed it this weekend, now all my gagues work!

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Unread 01-05-2004, 09:23 AM   #4
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My gauge didn't work before so I asked a repair guy about it he said with the 4.0 L in the jeeps there is 2 coolant sensors one in the back and one in the front... The one in the back driverside is the one for the gauge.... As for the other one i believe its in the front, but not sure. I don't know if that helps you any but figured i'd try
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1993 YJ Sahara
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Unread 01-06-2004, 12:33 PM   #5
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i went to auto zone and spent $15 on a mechanical gauge. tee,d it into the heater hose, and now i have a working gauge!
just an idea.

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Unread 01-07-2004, 09:12 AM   #6
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take the wire that clips onto your sensor, jump that to ground, if your temp gauge maxes out your problem is not anywhere in the wiring between the end of the wire and the gauge, its in the sensor. like other guys have already said, just be sure you changed the right sensor.

another problem i personally encountered, which seem unlikely in your case being winter and all. my thermostat actually came apart. so i had no thermostat, well the jeeps gauge would never move because it never had a chance for the coolant to get hot. i just changed the temp sensor one night in a rush and didnt bother to check anything else out. the gauge still didnt work. i was pissed but didnt have time to -=-=-=-=-=-=-=-= with it. a few nights later it got cold out and she wouldnt put out any heat. well lookin at my broken (or so i thought) temp gauge the light bulb finally clicked on and sure enough there was nothing left of my t-stat but the little plate. unlikely for you being winter and you would probably notice the lack of heat, but i figured i toss it in there anyways.
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Unread 01-07-2004, 09:57 AM   #7
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I have a similar problem but...My temp gauge works somtimes and somtimes it doesnt, it will go up to the normal operating mark then the next time i start it up the gauge doesnt move at all

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Unread 01-07-2004, 10:32 AM   #8
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Originally Posted by 83iS
I have a similar problem but...My temp gauge works somtimes and somtimes it doesnt, it will go up to the normal operating mark then the next time i start it up the gauge doesnt move at all

Mine does the exact same thing, but I have been too lazy to attempt fixing it. My oil pressure guage has never worked. I should probably get mechanical guages.
98 TJ 4.0L, Auto D44 3.73 LS
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