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Unread 06-26-2013, 09:20 AM   #16
Deeznutz73
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1973 CJ5 
 
Join Date: Mar 2011
Location: San Diego, California
Posts: 167
Oh I also forgot to mention that when I ordered new gauges from Morris 4x4 and installed them, the posts will make the leads ground out to the instrument cluster when tightened down. Might be something to check. I used a layer of hot glue to create a barrier between the post and the instrument cluster.

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Unread 06-26-2013, 08:32 PM   #17
g8ter55
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1983 CJ7 
 
Join Date: Jan 2013
Location: rensselaer, new york
Posts: 45
Ok I have some updates! I measured the temp sensor cold or at ambient which here in good ole NY was about 80 today and measured about 350 ohms- seemed normal. then I started the jeep and ran for 5-10 minutes with the radiator cap off, watched the water rise a little then the t-stat opened and coolant flowed very visually towards the upper rad hose. So, it isn't over heating but after the t-stat opened I waited another 5 mins then shot the block next to the sensor with my IR gun and saw about 220, not bad when stat is supposed to open at 195. Anyways I removed the wired again from the sensor and measured the sensor right after I shot the block. I measured 191 ohms and according to the charts you guys provided me it should be well under 100 ohms... So my gauge was pegged for 5 mins into running and the sensor isn't reading correctly either. Seems I have a few problems??? I still didnt check grounds and all that stuff but this was a good start. Thanks again for everyone's knowledge and willingness to help!
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Unread 06-30-2013, 11:35 AM   #18
ChefPatrick
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1980 CJ5 
 
Join Date: Oct 2009
Location: New Orleans, Louisiana
Posts: 54
same issue

I'm having the same issue with my cj 5 I6 new radiator, and cap, flushed system of course before installed, and then again. so clean fluids, it circulates, and the top and bottom hose are hot, I was curious if I have the cap off, and the fluid reads 170 with a thermometer, but the gauge inside reads all the way hot, is it really over heating? It doesn't boil over or anything.
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Unread 06-30-2013, 04:37 PM   #19
LumpyGrits
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1985 CJ7 
 
Join Date: Jul 2010
Location: The Mojave Desert Palmdale Ca. U.S.A.
Posts: 5,181
SWAG is your temp gauge is TU......
LG
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Unread 06-30-2013, 07:44 PM   #20
ChefPatrick
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1980 CJ5 
 
Join Date: Oct 2009
Location: New Orleans, Louisiana
Posts: 54
you're saying is not the water pump but just the gauge itself?
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Unread 06-30-2013, 07:52 PM   #21
LumpyGrits
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1985 CJ7 
 
Join Date: Jul 2010
Location: The Mojave Desert Palmdale Ca. U.S.A.
Posts: 5,181
Unless you have water driping out of the WP shaft or the bearing is make'n noise. No.
Do you have a fan clutch on the WP?
Do you have a shroud for the rad.fan?
LG
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Unread 06-30-2013, 08:00 PM   #22
ChefPatrick
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1980 CJ5 
 
Join Date: Oct 2009
Location: New Orleans, Louisiana
Posts: 54
there hasn't been a fan shroud on it since I've owned it I never had overheating problems and mine doesn't function with the fan clutch at all its just straight up fan coming out of the engine and its not boiling over anything and the fluid is hundred seventy degrees even if the temperature gaugeis all the way in the red so if that's the case then its just my temperature gauge I'm not running hot after all right?
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Unread 06-30-2013, 08:08 PM   #23
82JeepCJ7
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1982 CJ7 
 
Join Date: Jun 2010
Location: Marysville, WA
Posts: 5,025
Sounds to me like its the gauge or sending unit for the gauge. Go mechanical and never look back.
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Unread 06-30-2013, 08:33 PM   #24
ChefPatrick
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1980 CJ5 
 
Join Date: Oct 2009
Location: New Orleans, Louisiana
Posts: 54
replaced the sending unit. all original gauges the gas gauge doesn't work neither does the speedometer so I wouldn't be surprised if its just the gauge . I'm not boiling over and when I use a thermometer inside radiator with the fluid it showing hundred seventy degrees I assume I have nothing to worry about driving it correct?
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