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-   -   no coolant pressure and no heat (http://www.ramforumz.com/showthread.php?t=63796)

road383runner 10-16-2010 02:45 PM

no coolant pressure and no heat
 
96 ram 2500 4x4 360 engine i replace heater core, water pump, thermostat, all hoses, radiator, flush both ways engines does not build up coolant pressure and no heat. Truck runs at normal temp doesnt over heat can drive it all day and the radiator stays cool from about 3 inches from top hose over to passenger side and bottom hose is cold Thanks

RootBeer 10-16-2010 03:44 PM

Gotta ask, when you say you flushed it both ways, was that through the radiator or just the heater core?

No oil in the radiator and on water in the oil?

Mtx 10-16-2010 04:26 PM

i see where your going^.

does it lose any coolant at all? also could be bad radiator?

road383runner 10-16-2010 04:30 PM

Quote:

Originally Posted by Mtx (Post 335790)
i see where your going^.

does it lose any coolant at all? also could be bad radiator?

No doesnt lose any coolant. i was thinking of putting old radiator back in to try it to see if new one is bad

road383runner 10-16-2010 04:34 PM

Quote:

Originally Posted by RootBeer (Post 335774)
Gotta ask, when you say you flushed it both ways, was that through the radiator or just the heater core?

No oil in the radiator and on water in the oil?


i tap into both heater hoses and flush with drain plug out of radiator and with plug in radiator. no drip stick is clean just oil and no oil in radiator

Cloud22 12-05-2010 11:22 AM

i am having the same problem with mine i have replaced the rad, thermostat(x2),rad cap , flushed the heatercore, everything worked fine for a week and now its back to freezing again also after running for well over an hour i can still take the rad cap off and stick my finger in the coolant its barely hot

BigThirsty 12-05-2010 12:41 PM

I don't know what the stock temp is on the thermostat but if everything is working fine, I would look at getting a hotter thermostat.
I have the same problem with my 98 Ford Taurus. I recently had the entire engine and cooling system replaced and now it runs too cool not allowing the heater to get very warm even though, as I am told, "it is operating within factory specs". A simple fix is to put a piece of cardboard in front of the radiator to slow down the air flow.
I would ask if your clutch is locked on your fan causing it to pull all the time but even if this were the case, the thermostat should stay closed until it reaches the proper temp.


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