2nd Gen Ram Tech1994-2001 Rams: This section is for TECHNICAL discussions only, that involve the 1994 through 2001 Rams. For any non-tech discussions, please direct your attention to the "General discussion/NON-tech" sub sections.
My 99 Dodge Ram is not heating up. It will get as hot as about 150, but never any higher. I just replaced the thermostat with a 195 degree Stant, and radiator cap to no avail. The water pump is fairly new, installed last summer. I let it run for quite a while, and the upper radiator hose gets warm, almost hot as it should, but the lower is still cold. When the upper gets hot, the temp gauge is still reading about 150. I don't see any circulation in the radiator either.
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It is cold, in the low teens to high 20s. I did check the 195 stat I pulled out using the stove method, and it was opening at the correct temperature. It was installed in the correct direction as well. The antifreeze is a 50/50 mix as it should be. The heater in the truck gets warm, but not hot. The check engine light does not come on, and I know it works as well. Both heater core hoses are pretty warm as well. Thanks guys, I appreciate the help.