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Old Jul 16, 2009 | 08:44 AM
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Default temp?????

last sunday i went to a car show in red bank nj. from staten island. about a 25-30 mile trip. car ran about 180-200. my gauge at twelve o'clock postition reads 220. on the way home ambient temp was 80-85 degrees. all highway no traffic. by the time i got home car was on 220 degrees. i left it running in front of my house went and got a fluke meter with temp probe. i put the temp probe on the theromstat housing and in topped out at 198.7 thats as long as i could leave my hand there. so is my gauge off by 20 degrees and is 200 too hot???? i also have a 160 stat. sorry for the long read but im trying to paint a picture here
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Old Jul 16, 2009 | 08:58 AM
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220 is not out of the ordinary for summer and a cruise on the interstate.

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Old Jul 16, 2009 | 09:49 AM
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You will find, same as I, that the water temp in the head at that gauge sender is higher by 20f than the water at the t-stat, I dunno why, just is....

I have verified this many ways, as I would think it's in a big enough flow speed to not make any diff.....but it does....



so I dunno what to do with my computer, as the sensors are saying one thing, while the gauge says the truth....the computer is seeing the right temp at that point, the plug in the pass head is of course frozen in there good and tight...so of course I can't get it out without removing the head....can't win, damnit....

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Old Jul 16, 2009 | 10:18 AM
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It was 104 here in Houston yesterday afternoon while I was driving the 20 miles home from the office. I've calibrated my gauge to read the same as the thermostat housing. I have a 195 degree thermostat and bone stock original radiator (near as I can tell...).

The gauge read ~ 205 once it came to temperature. This is what it reads everyday the ambient temperature is above 85. Has for the more than 3 years I've been using the car for my daily commute. It has never boiled over either.

Sounds like just the nature of the beast to me.
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Old Jul 16, 2009 | 10:20 AM
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220 in the head, 200 at the t-stat, none of that sounds at all unusual to me. What I would be focused on is, are those temperatures steady, or still climbing? If you drove for 30 miles on the highway, and held those temperatures on a summer day, it sounds to me like everything is working just fine.
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Old Jul 16, 2009 | 02:06 PM
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thanks for all your responses. makes me feel a little easier when i take it out. thanks again
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Old Jul 20, 2009 | 01:18 PM
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well yesterday was 85* and i went about the same distance and i went a little over 220
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Old Jul 24, 2009 | 09:25 AM
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well today i added RADIATOR RELIEF this stuff is supossed to drop it by 30* lets see what happens. sunday will be the big test.... i'll keep you all posted
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Old Jul 24, 2009 | 01:35 PM
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If that radiator hasn't been cleaned in the last 20 years, you need to run some radiator cleaner through it [much more effective than radiator flush]. It will get rid of all the scale and deposits on the inside of the radiator fins and improve the rads cooling capacity.
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Old Jul 24, 2009 | 03:35 PM
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Originally Posted by 7T1vette
If that radiator hasn't been cleaned in the last 20 years, you need to run some radiator cleaner through it [much more effective than radiator flush]. It will get rid of all the scale and deposits on the inside of the radiator fins and improve the rads cooling capacity.
radiator was changed in 2005
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Old Jul 24, 2009 | 03:37 PM
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i drove about 7-10 miles all street stop and go driving today. really didnt see any major improvement
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Old Jul 24, 2009 | 04:28 PM
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i've tried that stuff before, and "wetter water" without any significant improvement either. No substitute for a well put together coolant system.
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