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Temp. Gauge ?

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Old Apr 16, 2004 | 03:01 PM
  #1  
79blueoval's Avatar
79blueoval
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From: S.W. Michigan
Temp. Gauge ?

The temp. gauge on my 79 F-350 w/400 is reading to the high end of the normal scale when fully warmed. I checked the coolant temp at 165 degrees,changed sending unit twice(once it was broken, second because of gauge reading) and I even changed the instrument cluster and still get same reading. Any ideas?

Thanks.
Mike.
 
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Old Apr 16, 2004 | 03:51 PM
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Sounds like you got the wrong temp sender. I just got my gauge working and it used a GP Sorenson TSU103. The parts guy said about all used this one.
 
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Old Apr 16, 2004 | 10:01 PM
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Mil1ion
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There are 2 different S/U's
One for the Idiot light & another one for the gauge.

The temp seems low.

I wouldn't go any cooler than a 180* T-stat.

The engine should run around 210-215 with the proper mix of water/coolant.
 
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Old Apr 17, 2004 | 01:20 AM
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Dennis is correct use the recommended 195 stat or 180 minimum. Do any of your other gages read high? If they do you may have a bad instrument panel volatage regulator.
 
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Old Apr 17, 2004 | 01:50 AM
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TNTsF-250
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From: I live in Calif. near S.F
Is your temp. gauge reading between { NORMAL } pick a letter, or higher ? how hot is it out side , Is it reading high on the freeway ? or stop and go ( city) TNTsF-250 good luck.
 
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Old Apr 21, 2004 | 04:30 PM
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79blueoval
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Thanks for the replys!
I need to put a different gauge on it and see where the problem is and go from there.
 
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Old Apr 21, 2004 | 11:39 PM
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ivanribic
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From: Spokane, WA
Originally Posted by Mil1ion
I wouldn't go any cooler than a 180* T-stat.

The engine should run around 210-215 with the proper mix of water/coolant.
I'm sitting at 190-200* now. Is that too cool? I was getting 215-220* but was worried that it was a little high. Think my T-stat is 190* but I added a second fan to keep the temp down. Of course it's been too cold to predict what will happen in summer temps.
 
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