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Old Jul 1, 2012 | 07:10 PM
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Default Operating coolant temps

this has nothing to do with the current heatwave - I live in Hilton Head,SC - warm this time of year!!
What is your operating coolant temp when air temp is above 90* and the car is in motion?

What is your operating coolant temp when air temp is above 90* and you are stationary?

fans seem to be working - passenger side is going full blast - driver side is completely enshrouded in plastic!! not sure what it is up to...but there is a horizontal crack where the front shroud piece meets the engine side plastic shroud that encloses this fan and using a piece of paper it seems that there is suction into the slight opening that would say that the fan is drawing air ---would like to be able to see it though!!
thanks!!!
Trusting that the Republic will stand through all this!!!
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Old Jul 1, 2012 | 07:35 PM
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Originally Posted by Irish Whiskey
What is your operating coolant temp when air temp is above 90* and the car is in motion?

What is your operating coolant temp when air temp is above 90* and you are stationary?
....and yours??
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Old Jul 1, 2012 | 07:45 PM
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Originally Posted by Irish Whiskey
Trusting that the Republic will stand through all this!!!
What are you trying to say?
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Old Jul 1, 2012 | 08:27 PM
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I think he's had to much of irish whiskey.
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Old Jul 2, 2012 | 12:19 AM
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Moving, around 192

Stationary, depends on whether the AC is on. When ON, 192 to 200, when the AC is OFF, 192 to 238 has been seen.

Not sure I answered your question, but I tried.
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Old Jul 2, 2012 | 02:49 AM
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I'm sorry for posting my thing in your thread but you might get more answers aswell.

I did in the last few months lets say about 2k milles after replacing coolant tank that had a small hole at top nipple.

Parts i changed with new in the last year:
- Waterpump
- Thermostat 160degree
- Coolant reservoir
- 15 PSI coolant cap
- Also running now a CoolIt(from SacCity), when activated it runns passanger side vent on full speed.

I always see temps around 200-234. when it hits 235 fans do they're job and cool down on 226! Yes, that is a good thing! my worries are more about how safe it is to run 225-230 constantly- ON A HIGHWAY!(with a/c on and CoolIt operating..) sometimes it seems i run cooler in city stop & go then on highway..

otherwise on the good side- there is no leaks and i dont seem to lose any coolant when i check level in morning and after reservoir replacement, i didnt 'overheat' or geting coolant steaming out.
system properly blurped 2 times
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Old Jul 2, 2012 | 05:38 AM
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Originally Posted by sccs
I'm sorry for posting my thing in your thread but you might get more answers aswell.

I did in the last few months lets say about 2k milles after replacing coolant tank that had a small hole at top nipple.

Parts i changed with new in the last year:
- Waterpump
- Thermostat 160degree
- Coolant reservoir
- 15 PSI coolant cap
- Also running now a CoolIt(from SacCity), when activated it runns passanger side vent on full speed.

I always see temps around 200-234. when it hits 235 fans do they're job and cool down on 226! Yes, that is a good thing! my worries are more about how safe it is to run 225-230 constantly- ON A HIGHWAY!(with a/c on and CoolIt operating..) sometimes it seems i run cooler in city stop & go then on highway..

otherwise on the good side- there is no leaks and i dont seem to lose any coolant when i check level in morning and after reservoir replacement, i didnt 'overheat' or geting coolant steaming out.
system properly blurped 2 times
thanks much, the coolant level is consistent and I do not think there are any leaks in the system...have a 160 thermostat...temps are comparable to yours at speed...with a/c off my temps will drop...I believe both fans are working well...outside air temp plays a big role...thinking of an insulating barrier in the car hood to keep engine bay cooler...thanks again..
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Old Jul 2, 2012 | 08:22 AM
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Might be time for a new radiator! Maybe a Dewitts?
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Old Jul 2, 2012 | 08:30 AM
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It sounds like both of you need to clean the exterior of your radiators/condensors.
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Old Jul 2, 2012 | 10:42 AM
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Originally Posted by sccs
my worries are more about how safe it is to run 225-230 constantly- ON A HIGHWAY!(with a/c on and CoolIt operating..) sometimes it seems i run cooler in city stop & go then on highway..
First; those temps are not outside normal range so I wouldn't worry too much. That said; they are probably a little higher than you should be running.

Your fans bear the bulk of the responsibility for cooling while you're either stopped or moving very slowly. At highways speeds the air moving through your radiator far exceeds that which your fans are capable of putting out.

I would suggest that your thoroughly clean your radiator and a/c condenser screens. You wouldn't believe how much crap accumulates between the two and blocks airflow.

Originally Posted by Irish Whiskey
thanks much, the coolant level is consistent and I do not think there are any leaks in the system...have a 160 thermostat...temps are comparable to yours at speed...with a/c off my temps will drop...I believe both fans are working well...outside air temp plays a big role...thinking of an insulating barrier in the car hood to keep engine bay cooler...thanks again..
OP; I've read your posts several times and still have no idea what your question/problem is... Can you clarify?
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Old Jul 2, 2012 | 10:44 AM
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Originally Posted by Irish Whiskey
...thinking of an insulating barrier in the car hood to keep engine bay cooler...again..
How would this work exactly?
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Old Jul 2, 2012 | 05:46 PM
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Irish Whiskey;1581212631] thanks have a 160 thermostat
A waste of money; operating with such a low temperature thermostat can be detrimental to you engine when the ambient temperature drops below 50 deg F.

thinking of an insulating barrier in the car hood to keep engine bay cooler...thanks again..
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Old Jul 3, 2012 | 12:00 AM
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Originally Posted by cdkcorvette7
First; those temps are not outside normal range so I wouldn't worry too much. That said; they are probably a little higher than you should be running.

Your fans bear the bulk of the responsibility for cooling while you're either stopped or moving very slowly. At highways speeds the air moving through your radiator far exceeds that which your fans are capable of putting out.

I would suggest that your thoroughly clean your radiator and a/c condenser screens. You wouldn't believe how much crap accumulates between the two and blocks airflow.




OP; I've read your posts several times and still have no idea what your question/problem is... Can you clarify?
want to know what is "normal" temp operating range and if mine is high or not.....I live in South Carolina and the hood of the car gets extremely hot when the car is in full sunshine, which it is most of the time...this has to affect the underhood temperature when temp is in mid-90s most every afternoon....earlier in the year when afternoon temps are 10 degrees cooler my temps are down below 200*...it is now when the afternoon temps are high and the car is out in them for periods of time that the temps rise..
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Old Jul 3, 2012 | 12:02 AM
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Originally Posted by ipuig
A waste of money; operating with such a low temperature thermostat can be detrimental to you engine when the ambient temperature drops below 50 deg F.
in South Carolina near Georgia border...low temps not an issue..


see answer to the question above...
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Old Jul 3, 2012 | 01:02 AM
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Originally Posted by Irish Whiskey
thanks much, the coolant level is consistent and I do not think there are any leaks in the system...have a 160 thermostat...temps are comparable to yours at speed...with a/c off my temps will drop...I believe both fans are working well...outside air temp plays a big role...thinking of an insulating barrier in the car hood to keep engine bay cooler...thanks again..
You never really explicitly posted what temps you are seeing but based on the quoted post above I'll assume you're seeing temps between 200 - 234?

If that's the case then you're not really out of range. I've seen temps over 230 sitting in traffic on a hot day though I typically run a little cooler than that.

As I've already said; you would probably benefit from having all of the crap that has built up between your radiator and A/C condensor removed. Some use a long extension on an air compressor to blow them out while they're still installed in the car. I always pull them out to make sure they're cleaned thoroughly (typically twice a year).

Some on here have reported that adding Water Wetter to their coolant was good for knocking off a couple more degrees but I wouldn't expect a huge difference.

Also, your 160 degree thermostat is not helping you while sitting still or moving at low speed. The only way that will make a difference under those conditions is to reprogram your fans to come on at a lower temperature setting. This is done either through tuning software or a handheld tuner like the diablo predator.
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Old Jul 3, 2012 | 04:43 AM
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I didn't like that wavering when I got my car either. I bought a real icemaker of a radiator. A double core. I picked up a 160 thermostat then replaced it with the stock 180 something, I had the computer flashed and now it runs at 180 - 185 degrees, sometimes at night it runs as low as 175-180 up and down. The hottest I was able to get it in the desert was 195. I could have gone with it a little warmer I guess, like a steady 195 but at the time, I was not sure how efficient the new capacity of the radiator would be.
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Old Jul 3, 2012 | 09:55 AM
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Originally Posted by LagunaPete
I didn't like that wavering when I got my car either. I bought a real icemaker of a radiator. A double core. I picked up a 160 thermostat then replaced it with the stock 180 something, I had the computer flashed and now it runs at 180 - 185 degrees, sometimes at night it runs as low as 175-180 up and down. The hottest I was able to get it in the desert was 195. I could have gone with it a little warmer I guess, like a steady 195 but at the time, I was not sure how efficient the new capacity of the radiator would be.
what do you mean by having the computer" flashed"? how does that change things?
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Old Jul 3, 2012 | 10:39 AM
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Hmm, running stock except with an under drive balancer and the fan operating temps changed. I was seeing about 200*F running 60mph with mid 90's temps over the weekend. My high fans come on at 210*F so I was seeing about that or a few more degrees in town. I really do need to clean my rad and condenser though.
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Old Jul 3, 2012 | 01:23 PM
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Using one of these once or twice a year helps a big bunch .....



PM for more info .... your can build one, or I can send one .....
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Old Jul 3, 2012 | 01:29 PM
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Originally Posted by cdkcorvette7
Also, your 160 degree thermostat is not helping you while sitting still or moving at low speed. The only way that will make a difference under those conditions is to reprogram your fans to come on at a lower temperature setting. This is done either through tuning software or a handheld tuner like the diablo predator.
I'm just wondering. How does at thermostat, with an opening temperature of 160, help a car maintain a temperature above 160 degrees......?
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