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post #1 of 6 Old May 18th, 2008, 04:07 AM Thread Starter
 
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Tempe gauge

Well i just replaced my radiator in my car and put in a 160 thermostat. Now my temp gauge always bounces around and drops below the cold mark and stays there for a while. I hear that a 160 is not good to have, so could that be whats wrong with my temp gauge or what? By the way i just hit a 100k miles. Maybe its the waterpump i dunno for sure so need some input...
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post #2 of 6 Old May 18th, 2008, 12:15 PM
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A 160* t'stat will keep the engine running not higher than 160*F on the highway and will prolong the warm-up period in cooler weather. The result will be a rich-running engine 'cause the engine computer will stay in open loop with poor gas mileage, poor emissions, accelerated cylinder wall wear (excess fuel washes oil film off), and a heater that barely puts out lukewarm air.
A 180* t'stat is as low as you should go. The gauge could be bouncing around because there's still air trapped in the intake manifold coolant passages.


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post #3 of 6 Old May 21st, 2008, 04:08 AM Thread Starter
 
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so i put my 195 thermostat back in and put a new radiator cap on and my temp gauge still bounces around. i dunno if that is effected by the water pump because that is the last thing that has to do with the cooling system to change. any ideas...
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post #4 of 6 Old May 22nd, 2008, 11:14 PM Thread Starter
 
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and everytime i get on it the temp shoots way up
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post #5 of 6 Old May 23rd, 2008, 03:52 PM
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Did you put in an aluminum radiator? I had some serious issues with my car's temps, then dropped in a Fluidyne, and haven't had a problem since.
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post #6 of 6 Old May 23rd, 2008, 08:52 PM Thread Starter
 
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no i just put a brand new stock one back in. i was thinking of putting in a fluidyne tho. i think i'm just gonna replace the waterpump anyway i'm at a 100k already
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