Coolant temp runs at 205 when sitting,flushed and new thermo - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 11-03-2006, 11:00 AM   #1
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Default Coolant temp runs at 205 when sitting,flushed and new thermo

ok i back flushed and refilled with all new Dexcool and a new 195 thermo drilled and now when driving ( outside temp 38 deg ) it runs at 195 perfect but when sitting it goes to 205 or 201 deg is this a problem ? I really dont want to change it all out again. It had a 195 thermo in it but it ran about 183 so i chgd it. Wont this heat up like a bugger in the summer,man I hope I dont have to rechange and put in a 185 I can't believe anything is plugged and ALL the air is out...HELP ! Thanks
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Old 11-03-2006, 11:53 AM   #2
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No worries. While sitting still, your cooling system is going to warm up some when you are not moving which is normal.
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Old 11-03-2006, 01:20 PM   #3
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here is what she does, sitting still temp goes to 210 then fans kick on and back to 198 in about 15 secs is this correct ? Isn't 210 too darn hot ??
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Old 11-03-2006, 01:22 PM   #4
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This is normal. Your low speed fans come on around 212 and the high speeds at 225ish.
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Old 11-03-2006, 01:26 PM   #5
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Thanks Bil, should I just leave it alone then with the 195 thermo ?
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Old 11-03-2006, 01:32 PM   #6
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I would leave it.
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Old 11-03-2006, 01:46 PM   #7
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Cars with ecm'* usually run at about 220 Deg. F. That should be normal. if its cooler than that, your doing great.
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Old 11-03-2006, 01:48 PM   #8
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Quote:
Originally Posted by chevyboy572
Cars with ecm'* usually run at about 220 Deg. F. That should be normal. if its cooler than that, your doing great.
Chevy.. please consult an FSM, I believe you will find that your above statement is not fully correct.
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Old 11-03-2006, 01:50 PM   #9
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you could just turn the heat/AC on which should kick on the engine fans
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Old 11-03-2006, 01:51 PM   #10
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My bad.
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