1st Generation Dodge Cummins 89-93 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with Rotary Injection Pumps

operating temperature

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Old 10-31-2009, 10:23 AM
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Default operating temperature

can anyone tell me the normal operating temp of a 12 valve cummins? and what does the gauge say on the dash whats the range of it? thanks
 
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Old 10-31-2009, 11:10 AM
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Good question. All i've been able to find out is second gen info, but it should be the same for our truck (right?) A second gen gauge shows 140* - 230* and normal temp is 170*.
 
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Old 10-31-2009, 11:45 AM
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mine runs 180
 
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Old 10-31-2009, 12:28 PM
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cool thanks guys!
 
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