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Running too cool

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Old Nov 5, 2013 | 02:43 PM
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ddan
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From: Queen Creek Arizona
Default Running too cool

I changed the thermostat (to 160) just after I bought my 94 6 speed... about 2 months ago the plastic tank split and replaced the radiator with a new all aluminum dual core...
Now with the lower temperatures I see temps ranging from 159 to 167.
I plan on changing it this week end, I'm assuming 180 is stock.
Can I harm anything by running so cool?
should I replace with a 190?
Thanks in advance for the feedback.
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Old Nov 5, 2013 | 03:20 PM
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Originally Posted by ddan
I changed the thermostat (to 160) just after I bought my 94 6 speed... about 2 months ago the plastic tank split and replaced the radiator with a new all aluminum dual core...
Now with the lower temperatures I see temps ranging from 159 to 167.
I plan on changing it this week end, I'm assuming 180 is stock.
Can I harm anything by running so cool?
should I replace with a 190?
Thanks in advance for the feedback.
probably lousy mileage and a polluter
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Old Nov 5, 2013 | 03:30 PM
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my 85 runs at 225 after replacing the fan switch but when it was ambient 190 it seemed a little low
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Old Nov 5, 2013 | 05:15 PM
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The car should be around 200 operating temp for everything to work. If it isn't hitting the right temp, the computer will think it's still cold and add more fuel to warm it up and bring the car up to correct op temp.
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Old Nov 5, 2013 | 06:05 PM
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Any parts place should be able to tell you what that stock stat is. On my 88 it is 195.
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Old Nov 5, 2013 | 06:53 PM
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In Arizona desert, with average night lows about 40+, no. A 180deg thermostat should be fine. Make sure your fans aren't running all the time.
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Old Nov 6, 2013 | 12:13 AM
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I believe 180° is the stock thermostat for LT1s.
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Old Nov 6, 2013 | 01:07 AM
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A T-stat that is stuck open will also cause a cooler temp.
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Old Nov 6, 2013 | 01:25 AM
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Not something normally worried about......

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