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

is this too hot?

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Old 03-28-2010, 08:30 PM
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this is when i am pulling hills loaded or empty. it seems like it is running hotter now with the new water pump.
 
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Old 03-28-2010, 08:36 PM
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I have seen mine there a couple times but it never stays that hot.
 
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Old 03-28-2010, 09:02 PM
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try a new t-stat that made mine run way cooler. The old t-stat must have stayed shut all the time, because it would get that hot during the summer sometimes, and the fan would never come on. Now my fan is on almost all the time, which kinda sucked this summer
 
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Old 03-28-2010, 09:02 PM
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no mine runs that hot to and its the same year kinda makes you wonder but not a lick of problems yet with the cooling system
 
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Old 03-28-2010, 09:08 PM
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That can;t be good for it. Im curious as to how hot that really is but normally anything over the halfway mark on any stock gauge on any car can't be good.
 
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Old 03-28-2010, 09:10 PM
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i would bet you could put a regular gauge in it and it wouldnt be as hot as you think and is your fan kicking in
 
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Old 03-28-2010, 09:18 PM
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2 words.

intercooler soak

---AutoMerged DoublePost---

mine ran about the same.. for 3k miles worth of towing. no ill effects
 

Last edited by Budgreen; 03-28-2010 at 09:18 PM. Reason: Automerged Doublepost
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Old 03-28-2010, 09:55 PM
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Originally Posted by Budgreen
2 words.

intercooler soak

---AutoMerged DoublePost---

mine ran about the same.. for 3k miles worth of towing. no ill effects
yep, That and check your ground from the battery negative to the core support. A bad ground will cause those gauges to read backwards for some reason.
 
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Old 03-28-2010, 10:09 PM
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Originally Posted by ArizonaRedneck
i would bet you could put a regular gauge in it and it wouldnt be as hot as you think and is your fan kicking in
I CANT TELL IF THE FAN IS KICKING IN OR NOT, IT ONLY GETS THIS HOT ON HILLS THEN GOES BACK DOWN TO THE HALF WAY POINT ON THE GAUGE AFTER I GET ON FLAT GROUND AGAIN
 
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Old 03-28-2010, 10:19 PM
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try a new thermostat mine never goes mush past the after the cold line
 


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