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Unread 04-02-2009, 10:13 PM   #1
Johnnylaw
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1986 CJ7 
 
Join Date: Jan 2009
Location: Northeastern CA
Posts: 169
258 running hot??

I just installed an electric water temp gauge. I didn't trust the factory gauge in the speedo. It would only go up about a third of the way and would never flucuate no matter the driving conditions. So after I installed the new gauge I noticed at idle it was running about 180*. Took it for a easy drive, with some incline for about 10 miles and it was running at 210*. How hot should it get, seems a little high to me. Thanks.

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Unread 04-02-2009, 10:16 PM   #2
CrazyHorse6
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1979 CJ7 
 
Join Date: Jun 2006
Location: Irmo, SC
Posts: 1,056
What thermostat does it have in it right now? 190? How does the engine run - timing good?
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Unread 04-03-2009, 12:03 AM   #3
Johnnylaw
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1986 CJ7 
 
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Location: Northeastern CA
Posts: 169
Not sure what therostat it has in it. It runs good, timing is set at 8* with the juicebox TFI upgrade.
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Unread 04-04-2009, 09:16 AM   #4
Bubba Ray
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1984 CJ7 
 
Join Date: Dec 2005
Location: SC
Posts: 1,673
Buy a new thermo and install or do the meat thermo in the rad neck test.
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Unread 04-04-2009, 09:52 AM   #5
CrazyHorse6
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1979 CJ7 
 
Join Date: Jun 2006
Location: Irmo, SC
Posts: 1,056
I picked up the radiator cap with built in thermometer from Advanced auto -works pretty well as a 2nd opinion.
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Unread 04-05-2009, 07:13 AM   #6
Mike Romain
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1986 CJ7 
 
Join Date: Nov 2007
Location: Off the Grid in Chester Grant, Nova Scotia, Canada
Posts: 13,775
Stock you are supposed to have a 195 thermostat in it so that is as 'cold' as it should run, 180 is too low... 210 sounds just right, a 50/50 mix of coolant is good to about 265 before boiling over.
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86/00 CJ7 Laredo, 33x9.5 BFG AT's, 'glass nose to tail in '00, 'New' frame,wires and plumbing in '09. Carter BBD Carbed 4.0 HO in '10.
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