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12 Valve 2nd Gen Dodge Cummins 94-98 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with P7100 Injection Pumps

Not getting heat from heater

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Old 11-21-2011, 06:49 PM
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Default Not getting heat from heater
I put in a new thermostat ,gauge is barely moving,dosnt seem to have any coolant in top hose slight leak from thermo housing ,any ideas on what to check next its coooold here in ohio
thanks
95 3500 12v
 
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  #2  
Old 11-21-2011, 06:58 PM
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the guage on my 12v takes forever to jump! but if your not getting any heat i would try a new heater core.. since you did the thermostat already
 
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Old 11-21-2011, 07:17 PM
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Take rad cap off. run engine and see if there is any movement in coolant, maybe water pump is not working.
 
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Old 11-24-2011, 11:46 AM
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thanks for the help ,sure hate to change heater core sounds like a pain
 
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Old 11-24-2011, 09:19 PM
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I was having problems with my heater when my thermostat was stuck open. Seeing as how that's a recent repair, my money's there.
 
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